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3 years ago

Please help!! ; Evaluate the expression. 6 ÷ −3 A. -2 B. -3 C. 3 D. 2

Mathematics

2 answers:

Licemer1 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

$6 \div - 3 = - 2$

Serggg [28]3 years ago

4 0

Answer:

-2

Step-by-step explanation:

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291-2999=10376 square feet

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2 years ago

Analysis of an accident scene indicates a car was traveling at a velocity of 69.5 mph (31.1 m/s) along the positive x-axis at th

STatiana [176]

We can find the acceleration via

${v_f}^2-{v_i}^2=2a\Delta x$

We have

$\left(5.20\dfrac{\rm m}{\rm s}\right)^2-\left(31.1\dfrac{\rm m}{\rm s}\right)^2=2a(115\,\mathrm m)$

$\implies\boxed{a=-4.09\dfrac{\rm m}{\mathrm s^2}}$

Then by definition of average acceleration,

$a_{\rm ave}=\dfrac{v_f-v_i}t$

so that

$-4.09\dfrac{\rm m}{\mathrm s^2}=\dfrac{5.20\frac{\rm m}{\rm s}-31.1\frac{\rm m}{\rm s}}t$

$\implies\boxed{t=6.33\,\mathrm s}$

We alternatively could have found the time without knowing the acceleration. Since acceleration is constant, the average velocity is

$v_{\rm ave}=\dfrac{x_f-x_i}t=\dfrac{v_f+v_i}2$

Then

$\dfrac{115\,\rm m}t=\dfrac{5.20\frac{\rm m}{\rm s}+31.1\frac{\rm m}{\rm s}}2$

$\implies\boxed{t=6.33\,\mathrm s}$

7 0

2 years ago

Solve for x using the diagram of circle C.<br> B В.<br> (3x+49)<br> (5x-7)

Nuetrik [128]

Answer:

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Step-by-step explanation:

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2 years ago

Olivia’s age plus twice John’s age is 30. Three times Olivia’s age plus 8 times John’s age is 108. How old are Olivia and John?

andrezito [222]

Answer:

John is 9 and Olivia is 12

Step-by-step explanation:

12+18= 20

36+ (9x8)= 108

4 0

2 years ago

Please help answer ASAP

uysha [10]

6.43125...

To the nearest cent, I'm assuming they mean, 6.43, since there is no 5 or higher number in the thousandths place...

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2 years ago