All categories

3 years ago

Juan drove 126 miles in 3 hours. If he continued at the same rate, how long would it

Mathematics

3 answers:

SSSSS [86.1K]3 years ago

6 0

Answer:

if he drove 9 hours it would 378 miles

Wittaler [7]3 years ago

4 0

I think it would take 8 hours hope this helps

shade

2 years ago

thx

shade2 years ago

0 0

the answer would be 8 hours this will help :)

You might be interested in

If the mean score on a stress test is 5, the standard deviation is 2, and the distribution is normal, what would be the mean val

expeople1 [14]

Answer: 0

Step-by-step explanation:

Given that :

Mean score on test = 5

Standard deviation on test = 2

Distribution = normal

The mean value when Converted to a z - distribution :

Zscore = (x - mean) / standard deviation.

Hence z score for the mean score will be :

X = mean score

Zscore = ( 5 - 5) / 2

Zscore = 0 / 2

Zscore = 0

Mean value when Converted to a z distribution will be 0

5 0

3 years ago

What does x equal 2(x-3)=14

Leno4ka [110]

Answer: x = 10

Explanation: To solve this equation for x, we start by distributing the 2 through the parentheses on the left side.

So we have 2 times x which is 2x and 2 times -3 which is -6. So our equation now reads 2x - 6 = 14.

Solving from here,

we add 6 to both sides of the equation and we have 2x = 20 and dividing both sides by 2, we find that x = 10.

We can check our answer by substituting a 10 back in for x in the original equation and we have 2(10 - 3) = 14.

10 - 3 is 7 so we have 2(7) = 14 or 14 = 14 which is a true statement so our answer checks.

3 0

3 years ago

Select the correct product.

AURORKA [14]

Answer:

Option A. $2x^{3}+7x^{2}+12x-8$

Step-by-step explanation:

we have

$(x^{2}+4x+8)(2x-1)$

Applying the distributive property

$(x^{2}+4x+8)(2x-1) =x^{2}(2x)-x^{2} +4x(2x)-4x+8(2x)-8\\ \\=2x^{3}-x^{2} +8x^{2}-4x+16x-8\\ \\= 2x^{3}+7x^{2}+12x-8$

7 0

3 years ago

Hailey wants to put a skirt around her desk to hide all her computer equipment and cords. She measured her desk, found the dimen

xeze [42]

Answer:

$C.\ Perimeter = 48 * 18$

Step-by-step explanation:

Given

See attachment for her sketch

Required

Which equation do not represent the perimeter

From the attached sketch:

$L =18in$ --- Length

$W =48in$ --- Width

Perimeter (P) is calculated as:

$P = 2 * (L + W)$

This gives:

$P = 2 * (18 + 48)$ ---- This represents (A)

Open bracket

$P = 2 * 18 + 2*48$ ---- This represents (B)

In algebra:

$2 * a$ means $a+ a$

So, the expression becomes

$P = 18 + 18 +48 + 48$ --- This represents (D)

This implies that (C) does not represent the perimeter

4 0

2 years ago

Which fraction do you multiply by to simplify 5/ 4 - 3i ?

Rzqust [24]

So I assume
$\frac{5}{4-3i}$

If so. Let us begin.

$\mathrm{Multiply\:by\:the\:conjugate}\:\frac{4+3i}{4+3i} \ \textgreater \ \frac{5\left(4+3i\right)}{\left(4-3i\right)\left(4+3i\right)} \ \textgreater \ \left(4-3i\right)\left(4+3i\right)$

$\mathrm{Apply\:complex\:arithmetic\:rule}:\ \left(a+bi\right)\left(a-bi\right)=a^2+b^2$
$Where\;a=4,\:b=-3 \ \textgreater \ 4^2+\left(-3\right)^2 \ \textgreater \ Refine \ \textgreater \ 25$

$\frac{5\left(4+3i\right)}{25} \ \textgreater \ \mathrm{Cancel\:the\:common\:factor:}\:5 \ \textgreater \ \frac{4+3i}{5}$

$Group\:the\:real\:part\:and\:the\:imaginary\:part\:of\:the\:complex\:number$
$\frac{4}{5}+\frac{3}{5}i\;is\;our\;answer!$

Hope this helps!

3 0

3 years ago