Answer:
Hi,
Step-by-step explanation:
Let say a the base of the triangle A and b the base of the triangle B.
[tex]a)\\\left\{\begin{array}{ccc}\dfrac{a*x}{2}&=&30\\\dfrac{b*(x+3)}{2}&=&32\\b=a-4\\\end{arraqy}\right.\\\\(i): a=\dfrac{60}{x}\\\\(ii): b=\dfrac{64}{x+3}\\\\b)\\\dfrac{64}{x+3}=\dfrac{60}{x}-4\\\\64x=(60-4x)*(x+3)\\\\4x^2+16x-180=0\\\\x^2+4x-45=0\\\\\Delta=16+4*45=196=14^2\\x=\dfrac{-4+14}{2}=5\ or\ x=\dfrac{-4-14}{2}=-9\ (impossible)\\So\ x=5,\ a=\dfrac{60}{5}=12, b=\dfrac{64}{5+3}=8\\\\Area\ of\ A=12*5/2=30\\Area\ of\ B=8*8/2=32\\\\Height\ of\ triangle\ B=x+3=5+3=8.\\[/tex]
can someone define the word of an pre-image in math
Answer:
The image before a transformation is performed.
Step-by-step explanation:
Hope it helps!
This means the image that was there before a translation, reflection, rotation, or dilation was performed.
(Will give 25 points!) Solve the system of linear equations by substitution. 1/2x + 1/4y = 2 x + y = 1
The spinner has 3 options: Red, Blue, or Yellow. Jacob says
because there are three colors there is a 1/3 chance of each color
being picked. Brittany says, just because there are three colors
doesn't mean there is always an equal chance of each
og ha
happening. Who do you agree with? How do you know?
SELECT the best answer
Pls help this is due tomorrow morning and it's 1 am I'll mark brainliest 15 points each
Answer:
263.76
Step-by-step explanation:
2×3.14×3² + 2×3.14×2×11 = 263.76
HELP MEEEEEEEE!!!!!!11 Thirteen babies were born in a hospital on the same day. The weights of the babies (in pounds) were 5.5, 6.4, 5.8, 8.1, 9, 7.6, 8.2, 7.2, 8.8, 6.6, 5.4, 7.7, and 6.9. 30 Select the correct answer. Which measure will help you calculate how much the babies' weights vary, on average, from their mean weight? A. mode B. interquartile range C. range D. mean absolute deviation E. quartile
Answer:
B interquartile range
Step-by-step explanation:
hope this helps:)
Answer:
B. interquartile range
Hope this helps! Please give brainlist!!
WILL GIVE BRAILIEST: 8th grade: equations and geometry
help please!!!! also please explain how to solve equations with different variables in it (like 2k+3x= 30)
Answer:
C. j=2 and h=4
Step-by-step explanation:
Step 1: Create a system of equations for your problem based off what we know.
- we should know that the equation to find the perimeter of something is
[tex]P= 2l+2w[/tex] where P is the perimeter, l is the length, and w is the width.
- we know that the perimeter of Rectangle P is 20 inches and that the perimeter of Rectangle Q is 30
- we know the length and width of both rectangles
Using this information, lets set up our system.:
[tex]\left \{ {{20=2(j+4)+2h} \atop {30=2(3h)+2(j+1)}} \right.[/tex]
Step 2: Using the top equation we're going to try to solve for one of the variables. I chose to solve for variable j.
[tex]20=2(j+4)+2h[/tex]
Start by distributing 2 into j + 4.
[tex]20=2j+8+2h[/tex]
Now subtract 8 from both sides of the equation.
[tex]12=2j+2h[/tex]
Now isolate variable j by subtracting 2h from both sides of the equation.
[tex]12-2h=2j[/tex]
Now condense the equation into simple terms by dividing both sides by its GCF 2 then reorder to get j on the left.
[tex]j=6-h[/tex]
Step 3: Now that we solved for variable j we can now substitute j into one of our equations from the original system. I chose to use the bottom equation and chose to distribute it before substituting.
[tex]30=6h+2j+2[/tex]
Subtract two from both sides to isolate the variables
[tex]28=6h+2j[/tex]
Now we can plug j into our equation
[tex]28=6h+2(6-h)[/tex]
Step 4: Distribute 2 into 6-h
[tex]28=6h+12-2h[/tex]
Step 5: Combine like terms
[tex]28=4h+12[/tex]
Step 6: Subtract 12 from both sides of the equation
[tex]16=4h[/tex]
Step 7: Divide both sides by 4
[tex]4=h[/tex]
Now that we know that h=4 we can plug 4 into one of our earlier equations. I used j=6-h
[tex]j=6-4\\j=2[/tex]
Plug answers into either one of the original equations to check answer
A gift box has the shape of a rectangular prism. How much wrapping paper do you need to cover the box?
Answer:
54
2(lb+bh+lh).
Use this formula ^
Use repeated addition to find the solution to each
multiplication problem. Change any improper fractions to mixed numbers
Answer:
2. 1 1/4
3. 2 1/3
4. 1 2/3
5. 1 3/7
6. 2 2/5
7. 1/2
8. 1 1/2
9. 2 1/4
10. 3 8/9
11. 2
12. 2 2/3
13. 2 1/2
14. 4 2/7
Step-by-step explanation:
2. 5/4 = 1 1/4
3. 3/1 * 7/9 = 7/3 = 2 1/3
4. 2/1 * 5/6 = 5/3 = 1 2/3
5. 10/7 = 1 3/7
6. 12/5 = 2 2/5
7. 3/6 = 1/2
8. 2/1 * 3/4 = 3/2 = 1 1/2
9. 6/1 * 3/8 = 3/1 * 3/4 = 9/4 = 2 1/4
10. 35 / 9 = 3 8/9
11. 8/1 * 1/4 = 2 * 1 = 2
12. 8/3 = 2 2/3
13. 5/2 = 2 1/2
14. 30/7 = 4 2/7
Help ASAP its due today!
Answer:
The answer is D) 60
Step-by-step explanation:
What is the surface area of this figure in square centimeters?
a rectangular prism with dimensions, right triangle base 3 cm by 4 cm, the height of the prism is 7 cm
Answer Choices:
75
60
96
84
Answer:
96cm
Step-by-step explanation:
front/back triangles: (4 * 3) / 2 = 6cm
bottom rectangle: 4 * 7 = 28cm
side rectangle (left): 3 * 7 = 21cm
slanted rectangle: pythagoras - 3^2 + 4^2 = x^2
9 + 16 = x^2
25 = x^2
square root of 25 = 5
x = 5
7 * 5 = 35cm
6 * 2 + 28 + 21 + 35 = 96cm
Help. Getting kind of fed up with homeschooling and just need to get it done.
The dot above the 4 is solid so 4 is part of the solution.
Answer: X ≥ 4
“There are 814 students going non a field trip, and they have 31 buses. How many students should go on each bus if they split up evenly on the buses? Solve the problem. Show your work”
Answer: 27
Step-by-step explanation: You have to divide. 814 divided by 31 is 26.2580645161, but you can round it to 27 so everyone can be on the bus, but with extra spaces
Answer:
27
Step-by-step explanation:
Match each expression on the left with an equivalent expression on the right. Some answer choices on the right will not be used.
Answer:
B (second equation down on left) is equal to B (equation 2 down on right)
C=F
D=A
A=C
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar.
Represent the measurement of angle B in the figure.
In the figure, angle A and angle D are complementary. The measurement of angle D is 45°. Complete the equation to solve for b, the measurement of angle B.
180 =
+ (90 –
) + b
Answer:
angle b is 45° as it is alternative angle of d so equal to d.
Step-by-step explanation
now....
180 = 90+(90-45)+b
90+45+45
90+90
=180
Answer:
angle b is 45° as it is alternative angle of d so equal to d.
Step-by-step explanation
now....
180 = 90+(90-45)+b
90+45+45
90+90
What is the value of x in the figure?
Enter your answer in the box.
x = [__]
Answer:
x by the box
D+22-x
Step-by-step explanation:
Eric surveyed different people with cell phones.
Ages in years = a
Texts they send per day = t
He drew a best-fit line and determined its equation.
Evaluate how old a person who sends about 70 texts a day is.
Answer:
B = 10.4
TTETEEETETTET
This figure was created by joining two right rectangular prisms.
Enter the volume, in cubic meters, of the figure.
Answer:
the answer is 30!
someone answer this ASAP!!!!!
Answer:
The Quotient is 136 and the Remainder is 0
Step-by-step explanation
( I hope it helps ^^)
what would the slop be of the coordinates -6,6 and 6,6
Which equation can be used to calculate the area of the shaded triangle in the figure below?
A rectangle with length of 12 feet and width 4 feet. A diagonal cuts the rectangle into two halves. One of the triangular halves is shaded.
2(12 + 4) = 32
fraction 1 over 2(12 + 4) = 8
2(12 × 4) = 96
fraction 1 over 2(12 × 4) = 24
I'll mark as brainliest
Answer:
It is [tex]\frac{1}{2}[/tex] (12 × 4) = 24
Step-by-step explanation:
[tex]\frac{1}{2}[/tex] (base × height) = area of triangle
[tex]\frac{1}{2}[/tex] (12 × 4) = area
area = 24
Find the surface area of the rectangular prism
Answer:
158 in
Step-by-step explanation:
front/back faces: 8 * 3 = 24in
side faces: 8 * 5 = 40in
top/bottom faces: 3 * 5 = 15in
2 * (24 + 40 + 15) = 158in
help!! I can't figure this out!!!
Answer:
I am pretty sure it is 7 leagues.
Step-by-step explanation: Count six squares or leagues from the right to the left and one up.
Rewrite as a simplified fraction.
\large{3.\overline{1} = {?}}3.
1
=?
This is incomprehensible, but I would be happy to help if you perhaps re-typed it :D
A linear function contains the following points.
What are the slope and y-intercept of this function?
Answer:
(+6x,+5y)
Step-by-step explanation:
To me its simple math by dividing these 2 numbers you get the slope
sorry i cant help much but this is what i can do also be sure to use rise over run before dividing
have a nice day
What is the area of this figure? Enter your answer in the box.
Answer:
33 or 900
Step-by-step explanation:
10+18+5= 33
10x18x5=900
Answer: 70
Step-by-step explanation: math
hurry ill give brainly
Answer: The answer is health
Please help me solve this.It’s really really important
Divide
(i) 448 ÷ (-7)
I need it now
please someone
Answer:
-64 is the answer
12. Convierte estas fracciones impropias en números mixtos:
A. 15/7=
B. 16/6=
C. 12/5=
D. 48/7
Por favor.
Answer:
15/7 = 2 1/7
16/6 = 2 4/6
12/5 = 2 2/5
48/7 = 6 6/7
Step-by-step explanation:
HELP PLEASEEEEE THank you fractions & ratios fill in space:
Answer:
2334546
Step-by-step explanation:
the answers is 2/3 /4/2 and 5/6