Twice a number is 14. What is the number .

Answers

Answer 1

Answer: 7

Step-by-step explanation: 7+7=14


Related Questions

point a is at (-7 5) and point c is at (5 -1). find the coordinates of point b on line ab such that ab is 5 times as long as bc

Answers

Step-by-step explanation:

Let the coordinates of point b be (x,y).

Given the coordinates of a (-7,5) and c(5,-1)

Now according to question

ab = 5bc

using distance formula

[tex]\sqrt{(x+7)^2+(y-5)^2} =5\sqrt{(5-x)^2+(-1-y)^2}[/tex]

Solving we can get

[tex]x=-\frac{-11+\sqrt{-4y^2-10y+25}}{2},\:x=\frac{\sqrt{-4y^2-10y+25}+11}{2}[/tex]'

However, we do need either x or y coordinate of point b to find the other.

Solve the system of equations using the substitution method.

{2x+8y=4x=−3y+5



Enter your answers in the boxes.

x=


y=

Answers

Answer:

[tex]x = 14[/tex]

[tex]y = -3[/tex]

Step-by-step explanation:

Given

[tex]2x + 8y =4[/tex]

[tex]x = -3y + 5[/tex]

Required

Solve

Substitute [tex]x = -3y + 5[/tex] in [tex]2x + 8y =4[/tex]

[tex]2(-3y + 5) + 8y =4[/tex]

Open bracket

[tex]-6y + 10 + 8y =4[/tex]

Collect like terms

[tex]-6y + 8y =4-10[/tex]

[tex]2y =-6[/tex]

Divide both sides by 2

[tex]y = -3[/tex]

Substitute [tex]y = -3[/tex] in [tex]x = -3y + 5[/tex]

[tex]x = -3 * -3 + 5[/tex]

[tex]x = 9+ 5[/tex]

[tex]x = 14[/tex]

What is the range of possible sizes for side x?

Answers

Answer:

x = 3.96

Step-by-step explanation:

To find the missing side length you'll need the formula a^2 + b^2 = c^2

a and b would be the shorter ends, 2.8 and 2.8

c would be the longer end that's opposite the right angle.

so substitute values

2.8^2 + 2.8^2 = c^2

7.84 + 7.84 = c^2

15.68 = c^2

√15.68 = √c^2

3.959797 = c

c = 3.96

side c would be side x so x is 3.96

What is the distance between (-9, -6) and (-2,-2)?
Choose 1 answer:

I NEED HELP I DONT UNDERSTAND!!

Answers

Answer:

Step-by-step explanation:

there is a formula for finding distance,

distance = sqrt [ ( x2-x1)^2 + (y2-y1)^2 ]

where point P1 = (-9.-6)  

    in the form of (x1,y1)

and point P2 = (-2,-2)  

 in the form of (x2,y2)

then

distance = sqrt [ (-2-(-9))^2 + (-2-(-6))^2 ]

distance = sqrt [ (-2+9)^2 + (-2+6)^2 ]

distance = sqrt [  [tex]7^{2}[/tex] + [tex]4^{2}[/tex] ]

distance = [tex]\sqrt{65}[/tex]

you can leave it in the form of  [tex]\sqrt{65}[/tex] because that's the most accurate , but also can make a close approximation with  8.062257748

That's all the places my calculators goes out to, the numbers continue thou.

In a survey based on a random sample of high school seniors at Roosevelt High School,
60% of those surveyed said they do more than 2.5 hours of homework per day. Based on this
data which of the following conclusions are valid? (Choose 2)

A) Less than 60% of all seniors at Roosevelt do more than 2.5 hours of homework per day.

B) About 60% of seniors at Roosevelt do more than 2.5 hours of homework per day.

C) About 40% of all seniors at Roosevelt do less than 2.5 hours of homework per day.

D) 40% of seniors at Whitney do no homework.

Answers

A is the answer to your question!

10x10x10x10x10x10x10 in word form

Answers

Answer:

10,000,000

Step-by-step explanation:

ten million

Answer:

10 times 10 or ten times ten or ten to the power of seven ( only for expontants )

Step-by-step explanation:

hope it helps :)

I need help answering this question I will give Brainlyiest to any one

Answers

Answer:

It is 21

Step-by-step explanation:

I took the test

Answer:

x = 147°

Step-by-step explanation:

x = 180° - 33°

x= 147 °

at food mart, hot dogs can be purchased in packages of 8 for $2.40 or packages of 12 for $3.00. which is a better buy? explain how you know HELP

Answers

Answer:

12-hot dog package is better buy because the per hot dog price is 5 cents cheaper

Step-by-step explanation:

2.40/8 = 0.30 per hot dog

3.00/12 = 0.25 per hot dog (this is the better buy by $.05)

Answer:

12-hot dog package  per hot dog price is 5 cents cheaper

Step-by-step explanation:

= 2.40/8 = 0.30 per hot dog

= 3.00/12 = 0.25 per hot dog (this is the better buy by $.05)

Hope this answer helps you :)

Have a great day

Mark brainliest

some please help i’ll give brainliest

Answers

Answer:

Statement                     Reason

∠1 = ∠2                          Given

AP = BP                          Given

∠APD = ∠BPC                Vertical angles

Therefore, by ASA , ΔAPD ≅ ΔBPC

. If you roll two dice, what is the probability of rolling a not rolling a
double with a sum greater than 7? Give answer as a fraction in simplest
form. *

Answers

With two dice, you can get sums of between 2 and 12,

B Reading Choose the best estimate for the multiplication problem below. 85 x 86
A. 8100
B. 10,400
C. 12,200​

Answers

Answer:

A. 8100

Step-by-step explanation:

85 x 86

To estimate, we multiply 85*100, which is the easiest multiplication, as a multiplication by 100 is the same as placing two zeros at the end of the number.

85*100 = 8500

Since 86 < 100, 85*86 < 8500. Thus, the correct estimate is given by option A.

quickly answer or ill take this question down

Answers

The cross sectional shape is a circle.

find the radian measure of the angle 55°​

Answers

Answer:

[tex]55 degree= \frac{\pi }{180}\times55=\frac{11\pi }{36} =0.9599 radians[/tex]

Step-by-step explanation:

[tex]180 degree= \pi radian\\1 degree= \frac{\pi }{180}\\55 degree= \frac{\pi }{180}\times55=\frac{11\pi }{36} =0.9599 radians[/tex]

PLEASE HELP Which is the least common multiple of 18, 36, and 45 A 90 B 180 C 450 D 900​

Answers

B

Least common multiple can be found by multiplying the highest exponent prime factors of 36 and 45.

The table represents the balance of Fernando’s loan, y, over a period several months, x. He used technology to create the scatter plot shown and determine the best fit equation to model the data: y = -440.91x + 22,060.70. Determine how long it will take to reach the given balances.

Answers

Answer:

The balance of the loan will be approximately $15,000. - Month 16

The balance of the loan will reach $0. -  Month 50

Which type of car had the largest range in monthly sales? Explain how you came up with your answer.

Answers

Answer:

Can you please attach a picture of the question so I can help?

Step-by-step explanation:

Listed below are amounts of arsenic in samples of brown rice from three different states. The amounts are in micrograms of arsenic and all samples have the same serving size. The data are from the Food and Drug Administration. Use a 0.05 significance level to test the claim that the three samples are from populations with the same mean. Assume that the distributions for each state are normal and that all variances are equal.

Arkansas 4.8 4.9 5.0 5.4 5.4 5.4 5.6 5.6 5.6 5.9 6.0 6.1
California. 1.5 3.7 4.0 4.5 4.9 5.1 5.3 5.4 5.4 5.5 5.6 5.6
Texas. 5.6 5.8 6.6 6.9. 6.9 6.9 7.1 7.3 7.5 7.6 7.7 7.7

Answers

Answer:

Texas Texas Texas is I think right

No, the claim that the three samples are from populations with the same mean is not correct and this can be determined by using the given data.

Given :

The amounts are in micrograms of arsenic and all samples have the same serving size. The data are from the Food and Drug Administration. Use a 0.05 significance level.

The Hypothesis test is given below:

Null Hypothesis: [tex]H_0:\mu_1=\mu_2=\mu_3[/tex]

Alternative Hypothesis: [tex]H_a:\mu_1\neq \mu_2\neq \mu_3[/tex]

For the F-test, the test statistics is given by:

[tex]F = \dfrac{MS_{\rm{between}}}{MS_{\rm{within}}}[/tex]

Now, substitute the values of known terms in the above expression.

[tex]F = \dfrac{15.8252}{0.6896}[/tex]

[tex]F = 22.95[/tex]

So, the p-value regarding the value of F is:

[tex]P-value=P(F>22.95)[/tex]

[tex]P-value = 1.0.9999[/tex]

[tex]P-value = 0.0001[/tex]

The Null Hypothesis is rejected because P-value is less than the significance value.

For more information, refer to the link given below:

https://brainly.com/question/10758924

4 1/2 divied 1 5/8 please help

Answers

Answer:

36/13 (2 10/13)

Step-by-step explanation:

Convert 4 1/2 into an improper fraction: 4 1/2 = 9/2

Convert 1 5/8 to an improper fraction : 1 5/8 = 13/8

Divide: Dividing 2 fractions is the same as multiplying the first fraction by the reciprocal of the second value (the numerator becomes the denominator and the denominator becomes the numerator). 13/8 is 8/13 as a reciprocal. Next multiply the 2 numerators. 9 x 8 = 72. Then multiply the denominators. 2 x 13 = 26. Which gives 72/26. Divide both numbers by 2 which gives 36/13. 36/13 as a mixed number is 2 10/13

Answer:

36/13 (2 10/13)

Step-by-step explanation:

:)

If you know how to solve this, Please answer it. Thank You

The first one to answer the question right, will get Brainlist!

I PROMISE!!!!!​​

Answers

Step-by-step explanation:

f[g(X)]

=f(X+5)

=(x+3)+5

=x+8

Ans: fg(x)=x+8

Step-by-step explanation:

If you know how to solve this, Please answer it. Thank You

The first one to answer the question right, will get Brainlist!

I PROMISE!!!!!

Use the graph to find the approximate solutions to the question.

Answers

It would be D: X is -2 or 3

Can someone please help, ty!
Will mark brainliest!

Answers

Answer:

I think it is -31

Step-by-step explanation:

-4(5) -11 = -31

Answer:

-31

Step-by-step explanation:

First you substitute in 5 for all of the x in the equation, making

f(5) = -4(5) - 11

Then you just have to simplify from there.

f(5) = -20 - 11

f(5) = -31

There are 6 shipping boxes that each ocontain 36 lbs of merchandise from a toy store.
Before the boxes are loaded onto a delivery truck, the same amount of additional
merchandise is added to each box. The total weight of all of the boxes is 258 pounds.
How much additional weight was added to each box?

Answers

Answer:

7kg

Step-by-step explanation:

258 / 36 = 7.16

the nearest ten, 7.20

Mark me brianest

Sarah's vegetable soup recipe uses 2
cups of vegetables to make one pot of soup. She wants to triple the recipe.
How many cups of vegetables does she need?

Answers

Answer:

No.of cups for one soup : 2 cups

No.of cup for 3 soups: 2×3

=6

So , 6 cups of vegetable

HOPE IT HELPS U :)

which of the following is not a solution of -2 is less than or equal to x less than 5​

Answers

Answer:

See Explanation

Step-by-step explanation:

Given

[tex]-2 \le x < 5[/tex]

Required

Which is not a solution

The options are not given. So, I will list out the solutions, instead.

We have:

[tex]-2 \le x < 5[/tex]

This implies that: x starts from -2 and ends at 4

[tex]x = \{-2,-1,0,1,2,3,4\}[/tex]

Any number outside the above is not a solution of [tex]-2 \le x < 5[/tex]

solve and explain your reasoning (x+3)=-6​

Answers

Answer:

(x+3)=-6

x=-6-3

x=-9

Step-by-step explanation:

Hope it helps!

When side changes positive changes into negative.

Someone please Help!

Answers

180 cm i think, you have to multiply

What is the measure, in degrees, of angle b?

Answers

The top angle is the same as the bottom angle, since they are vertically opposite angles.

b+20=40

b=40-20

b=20

It is also 20 degrees.

Answer:

Step-by-step explanation:

angle b+20 degree=40 degree(being vertically oppoite angles)

angle b=40-20

angle b=20

therefore angle b=20 degree.

PLEASE HELP

A bag hes 10 red marbles, 3 green marbles,
7 yelow marbles, and 5 blue merbles. What is
the probability of crowing a red marble and
then g, blue, marble without replacing the first?

Answers

Answer:

[tex]\frac{3}{5}[/tex]

Step-by-step explanation:

Probability is the chance of an event happening. One finds the probability of an event by using the following general formula,

[tex]\frac{desired}{total}[/tex]

In this case, the desired outcome is pulling whether a red or blue marble from the bag, the desired equals the sum of the number of red and blue marbles.

(red) + (blue)

= 10 + 5

= 15

The total number of marbles is the sum of all the number of marbles in the bag.

(red) + green)  + (yellow) + (blue)

= 10 + 3 + 7 + 5

= 25

Now substitute these values into the formula to find the probability, then simplify,

[tex]\frac{15}{25}[/tex]

Divide both the numerator and denominator by (5),

[tex]\frac{3}{5}[/tex]

If v=9i + 12j , find |v|​

Answers

Answer:

=12j + 9i

Step-by-step explanation:

HELLOOOOOOOOOOOOOO WASUPPPPPPP

Answers

hii........

nothing just studying

hi how are you doing?
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