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3 years ago

Which is the best way to answer this number sentence 64÷0.4

Mathematics

2 answers:

frozen [14]3 years ago

6 0

64÷0.4 = 160
160÷0.4 = 64
160 x 0.4 = 64

lana66690 [7]3 years ago

5 0

Multiply both numbers by 10 so that there are no complicated decimals to work with but you must make sure to multiply both sides by the same amount to keep the equation from changing value.

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Are the triangles AA, SAS, SSS or not similar ?

OverLord2011 [107]

Answer:

I think SSS ,.............

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3 years ago

Solve. (2x+24)(4x+36)

Eva8 [605]

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4 years ago

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I thought of a number. This number double is 7 less than 29. What is my number? hurry please

jekas [21]

Answer:

Step-by-step explanation:

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3 years ago

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Which ordered pair is a reflection of (3, 7) across the y-axis?

stich3 [128]

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4 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

3 years ago