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Vlada [557]
3 years ago
15

Please I need help quickly I'm on a time limit

Mathematics
1 answer:
Ainat [17]3 years ago
7 0
The third choice does not represent a proportional relationship because the y-intercept ≠ 0. 
Hope that helped you.
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What is -157/20 as a decimal
abruzzese [7]
-\frac{157}{20}=-\frac{140+17}{20}=-\left(\frac{140}{20}+\frac{17}{20}\right)=-7\frac{17}{20}\\\\-7\frac{17}{20}\to\ divide\ 17\ by\ 20\to\boxed{-7\frac{17}{20}=-7.85}\\\\other\ way\\\\-7\frac{17}{20}=-7\frac{17\cdot5}{20\cdot5}=-7\frac{85}{100}=\boxed{-7.85}
4 0
2 years ago
What is 7×7×7-10×10÷4
Stels [109]
= 318
And the calculator can help you on problems like this 

Hope That Helped =D
8 0
3 years ago
Can you answer this?
Pavlova-9 [17]
If m =2 insert m so  4+4-3+5


answer is 5
4 0
3 years ago
Read 2 more answers
I need help with this
evablogger [386]

Answer:

A) (-8, -16)

B) (0, 48)

C) (-4, 0), (-12, 0)

Step-by-step explanation:

A) the vertex is the minimum y value.

extremes of a function we get by using the first derivation and solving it for y' = 0.

y = x² + 16x + 48

y' = 2x + 16 = 0

2x = -16

x = -8

so, the vertex is at x=-8.

the y value is (-8)² + 16(-8) + 48 = 64 - 128 + 48 = -16

B) is totally simple. it is f(0) or x=0. so, y is 48.

C) is the solution of the equation for y = 0.

the solution for such a quadratic equation is

x = (-b ± sqrt(b² - 4ac)) / (2a)

in our case here

a=1

b=16

c=48

x = (-16 ± sqrt(16² - 4×48)) / 2 = (-16 ± sqrt(256-192)) / 2 =

= (-16 ± sqrt(64)) / 2 = (-16 ± 8) / 2 = (-8 ± 4)

x1 = -8 + 4 = -4

x2 = -8 - 4 = -12

so the x- intercepts are (-4, 0), (-12, 0)

6 0
2 years ago
After school, Tony biked toward the mountains at a constant rate of 8 mph. An hour later, Terry biked the same route at a consta
liberstina [14]

Answer: t-1

Step-by-step explanation: You’re welcome

7 0
2 years ago
Read 2 more answers
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