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Temka [501]
4 years ago
13

I need help on this one , I keep getting the same answered but says it’s wrongg

Mathematics
1 answer:
VARVARA [1.3K]4 years ago
4 0

Answer:

Step-by-step explanation:

p(x)= -3+4x

p(-2)=-3+4(-2)

<h2>p(-2)=-3-8=-11</h2><h2>p(0)=-3</h2>

p(5)=-3+4(5)

p(5)=-3+20

<h2>p(5)=17</h2>
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⦁The areas of two similar triangles ABC and DEF are 100 cm2 and 144 cm2. If EF = 15 cmthen find the length of side BC.
ch4aika [34]

we know that


area larger triangle (DEF)=[scale factor]²*area smaller triangle (ABC)

solve for scale factor

scale factor=√[area larger triangle/area smaller triangle]

scale factor=√[144/100]------> scale factor=1.2


therefore

measure EF=scale factor *measure BC

solve for measure BC

measure BC=measure EF/scale factor-------> 15/1.2------> 12.5 cm


the answer is

measure BC is 12.5 cm

6 0
3 years ago
My brain hurts trying to solve this. Im pretty sure x = 42 but im not sure about the equation.
SVEN [57.7K]
<h2>Answer:</h2><h2>x+12 = 30</h2><h2>x = 18 students</h2><h2>Step-by-step explanation:</h2>

6 0
3 years ago
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A taxi driver estimates that his earnings are $240 on a fine day and $320 on a wet day. What are his expected earnings on a day
castortr0y [4]
Probability of raining=0.45 
Probability of not raining=1-0.45=0.55
The expected earning will be given by:
E(x)=240(0.55)+320(0.45)
E(x)=132+144
E(x)=276

Answer: $276
7 0
3 years ago
How do you do this? It's identifying are and perimeter
nikklg [1K]
You add up all the sides

5 0
3 years ago
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What is the volume of a triangular pyramid if the base area is 125 square feet and the height is 15 feet
joja [24]

Answer:

625 cubic feet

Step-by-step explanation:

Given data

Base area= 125 square feet

Height = 15feet

The expression for the volume of a pyramid is given as

V= a^2*h/3

but a^2= 125 square feet

V= 125*15/3

V= 1875/3

V=625 cubic feet

8 0
3 years ago
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