Answer:
x=60, y=30
Step-by-step explanation:
4x-7y=30
4x-5y=90
Subtract the equations
4x-7y=30-4x-5y=90
=2y=60
Solve 2y=60
Divide both sides by 2
2y/2=60/2
Simplify;
y=30
For 4x-7*30=30 for x
4x-7y*30=30
Multiply the numbers:7*30=210
4x-210=30
Add 210 to both sides
4x-210+210=30+210
Simplify;
4x=240
Divide both sides by 4
4x/4=240/4
Simplify
x=60
The solutions to the system of equations are:
x=60, y=30
Hope this helped!!!
what is the circumfrence of a circle with a radius of 4 inches. Use 3.14 for pi.
Answer:
25.12 in.
Step-by-step explanation:
Circumference formula: pi*2*radius
radius=4, so
3.14*2*4=25.12
A tennis court for singles play is 78 feet long and 27 feet wide. Part 1 out of 3 The court for doubles play is 9 feet wider than the court for singles play. How much more area is covered by the tennis court used for doubles play? The tennis court used for doubles play covers square feet more area than the court used for singles play.
Answer:
702 ft^2
Step-by-step explanation:
Steps to answering this question
1. determine the area of the singles court
area of a rectangle = length x width
27 x 78 = 2106 ft^2
2. Determine the width of the doubles court
27 + 9 = 36FT
3. Calculate the area of the doubles court
area of a rectangle = length x width
78 x 36 = 2808 ft^2
Find the difference in areas
2808 - 2106 = 702 ft^2
an alloy contains nickel and chromium in 3:2 ratio, find the mass of each metal in 540g of alloy.
Answer:
Let the mass of nickle be 3x
And the mass of chromium be 2x
According to question,
3x+2x = 250
5x = 250
x =250/5
x = 50
Ruth develops a blueprint with the help of a triangle. The longest side of the instrument measures 14 inches and one of the sides measures 12 inches.
Answer:
The other side is sqrt(52) units or 7.21110255 units
Step-by-step explanation:
I'm assuming you want the other side of the triangle, which you would use the Pythagorean theorem for.
a^2 + b^2 = c^2
12^2 + b^2 = 14^2
144 + b^2 = 196
b^2 = 52
b = sqrt(52) or 7.21110255
find the value of b if triangles are similar
Answer:
9 because the constant of proportianlity is 3/4 and 3/4 of 12 is 9.
The rectangle below has an area of x^2-15x+56x
−15x+56x, squared, minus, 15, x, plus, 56 square meters and a length of x-7x−7x, minus, 7 meters.
What expression represents the width of the rectangle?
Width= meters
Answer:
x-8
Step-by-step explanation:
Which phrase is best represented by the algebraic
expression
x/4 -2
Answer:
D) 2 less than the quotient of x divided by 4
Step-by-step explanation:
Since it's x/4 there has to be a quotient or division involved in the sentence, which eliminates A and B. Since there's a -2, C is eliminated since it doesn't include 2.
plllllllllllllllllllllllllllz asap simplify (4m)^2
Answer:
16m^2
Step-by-step explanation:
Answer:
16m²
Step-by-step explanation:
(4m)²
4m × 4m = 16m²
-TheUnknownScientist
1. What is the area of the trapezoid? The diagram is not drawn to scale.
here you go please do it quick with work
Answer:
Answer:
5. 18
6. 13.75 all the arrows for 6 is just explaining how 13,75 is the answer
5 2 11 8 35 32
if i helped brainliest is appreciated :)
what does 41 = w - 4
What linear inequality best describes the following graph
Answer:
C. y≤(2/5)x+1
Step-by-step explanation:
i graphed it
18÷(−23)×4÷(−7)×(−3)÷(14)
18÷−23×4÷−7×(−3)÷14
They both equal to -0.09
Answer:
-0.0958296362=-0.09
this is the answer for both
like last time>:(
Step-by-step explanation:
what is 5.823 rounded to the nearest whole
what is 3.147 rounded to the nearest whole
Answer:
6 and 3
Step-by-step explanation:
5.8 to the nearest whole is 6
3.147 to the nearest whole is 3
what is the range of the data set on this dot plot
A.
B.
C.
D.
Answer:
B
Step-by-step explanation:
Subtract the minimum number from maximum number.
[tex]10 - 2 = 8[/tex]
Riley earned $5 for
1/2
of an hour babysitting. What is her hourly rate?
Simplify your answer and write it as a proper fraction, mixed number, or whole number.
Answer:
$10
Step-by-step explanation:
Her hourly rate is 10 because if she earned $5 for half and our or 30 minutes that means to get to 1 hour multiply by 3 so you get. $10 per hour
Answer:
$10 per hour.
Step-by-step explanation:
$5 = 1/2 an hour | 30 minutes
So if you were to multiply $5 by 2 you'd get $10 which would make 1 whole hour.
$10 In different forms:
2/2
1.00
1
What is the equation that you get when you put together the two
equations below?
Answer:
1st option
Step-by-step explanation:
Given the 2 equations
2x + 5y = 19 → (1)
y = 3x - 3 → (2)
Substitute y = 3x - 3 into (1)
2x + 5(3x - 3) = 19
Susan buys the items listed below at a grocery store.
2 packages of chicken priced at $12.36 per package
1 half-pound of broccoli priced at $1.98 per pound
1 gallon of milk priced at $3.49 per gallon
There is no sales tax on the food she buys. Susan pays for the item and receives $0.80 in change. What amount of money does Susan use to pay for the items?
Answer:
$29.38
Step-by-step explanation:
Dan bought 6 new baseball trading cards to add to his collection. The next day, his dog ate half of his collection. There are now only 28 cards left. How many cards did Dan start with? Giving brainliest!
Answer:
50 cards
Step-by-step explanation:
28*2= 56
56-6=50
Answer:
50
Step-by-step explanation:
28 x 2 = 56
56 - 6 = 50
PLEASE HELP!!!!!!!!!_______
Answer: B
Step-by-step explanation:
Ryan has 4 cups of grape juice, and Kelsey has 7 cups of lemonade. They want to combine what they have to make punch. How many 12-cup servings of punch can they make?
Answer:
8
Step-by-step explanation:
Actually since there is only 4 cups of grape juice and 7 cups of lemonade you could only make 4 cups of punch. So your answer would be 8 because 4x2=8
Sydney and Neil went picking strawberries. Sydney picked 137 fewer strawberries than Neil did. Together, they picked 223 strawberries. How many strawberries did Neil pick?
Answer:
86
Step-by-step explanation:
223-137=86
What is the value of x?
Enter your answer in the box.
x =?
Answer:
x= 54
Step-by-step explanation:
2x+2= 3x-52 since they are equal
sole
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Answer:
D
Step-by-step explanation:
Answer:
D.14
I hope it helps my friend.
plz mark me as brainliest.
Match each equation to its solution
Answer:
1st answer: -8
2nd answer: -5.2
3rd answer: 28.8
4th answer: 4
Answer:
x/2=-4_______ -8
-5x=26_______ -5.2
x/-7.2=-4________28.8
3
__ =6________4
2 x
Step-by-step explanation:
David and his dad are building a room in the basement. They want the
room to have an area of 150 ft?. If one wall is 11.25 ft. long, how long must the other
wall be? Show your work.
Solve: 36a^4 b^10 - 81a^16 b^20 using GCF
I really need help with this asap thank you in advance :)
Answer:
9a^4b^10(2+3a^6b^5)(2-3a^6b^5) is your answer
Step-by-step explanation:
36a^4 b^10 - 81a^16 b^20
9×4a^4 b^10-9×9a^4×a^12×b^10×b^10
9a^4b^10(4-9a^12b^10)
9a^4b^10{2²-(3a^6b^5)²}
9a^4b^10(2+3a^6b^5)(2-3a^6b^5)
The answer is [tex]{9a^4 b^{10}( 4 - 9a^{12} b^{10})}[/tex]
Given:
[tex]\to 36a^4 b^{10} - 81a^{16} b^{20}[/tex]
To find:
solve the expression by using the GCF
Solution:
[tex]\to 36a^4 b^{10} - 81a^{16} b^{20}[/tex]
taking common the similar term:
[tex]\to 9a^4 b^{10}( 4 - 9a^{12} b^{10})[/tex]
Learn more about the GCF:
brainly.com/question/25067118
Find the distance between the two numbers. Write your answer as a decimal.
−2.2, 8.4
Answer:
-10.6
Step-by-step explanation:
Pos
Use the inverse trig ratios to find the value of the missing angle. Round to the nearest WHOLE NUMBER.
99
44
Angler
Answer:
hi
Step-by-step explanation:
12 in
Which expression is equivalent to: -3a-7a+4b
A: -10a-7+4b
B: -10a+4b
C: -14ab
D: -4a+4b
Answer:
-10a+4b
hope this answer helps you.....