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stira [4]
2 years ago
7

A student solved the equation below. Describe the error they made. (What did they do wrong? What should they have done?) *

Mathematics
1 answer:
Zepler [3.9K]2 years ago
8 0
Error: they divided both sides by three.
correct: they should’ve first subtracted both sides by two then divided both sides by three.
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The length of a picture frame is 7 inches more than the width. For what values of x is the perimeter of the picture frame greate
makkiz [27]
P=2(L+W)
l=x+7
w=x
P=2(x+7+x)
P=2(2x+7)
P=4x+14

hast to be greater than 154

P>154
4x+14>154
minus 14 both sides
4x>140
divide 4
x>35


4 0
3 years ago
Camila goes out to lunch. The bill, before tax and tip, was $9.20. A sales tax of 3% was added on. Camila tipped 19% on the amou
aleksandrvk [35]

Answer:

$0.276

Step-by-step explanation:

Given data

Bill= $9.20

Tax= 3%

Tip= 19%

Let us find the amount of the tax and the tip

Tax

=3/100*9.20

=0.03*9.2

=$0.276

Amount after sales tax

= 0.276+9.20

=$9.476

Tip

=19/100*9.476

=0.19*9.476

=$1.80044

Therefore the sales tax

=$0.276

4 0
3 years ago
The length of a rectangle is 12 in. and the perimeter is 56 in. find the width of the rectangle
pentagon [3]
The perimeter p of the rectangle with length l and width w is:
p = 2l + 2w
that is, two times its length and two times its width, lets solve for the width w and substitute known data:
<span>p = 2l + 2w
</span>2w = p - 2l
w = (<span>p - 2l</span>)/2
w = (56 - (2*12))/2
w = (56 - 24)/2
w = 32/2
w = 16
therefore the width of the rectangle is 16 in
8 0
3 years ago
(15 points)Need help on math homework... here take sum point for helping!
Alex787 [66]

Answer:

7 is y= 0.25p+5

8 is 60t=1350

9 is y=5t+40

10 is y=1 1/4b

Step-by-step explanation:

4 0
3 years ago
The graphs below have the same shape. What is the equation of the red<br> graph?
fiasKO [112]
The correct answer is C) F(x)= x^2+4
one way to tell this is correct is the y-intercept is at positive 4
5 0
3 years ago
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