2 years ago

HELP I DONT UNDERSTAND CAN SOMEONE HELP

Mathematics

1 answer:

Rashid [163]2 years ago

8 0

B

Do 450 x 2/5 (0.4 in decimal form)

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Find solution to the system of linear equations. 5x1 + x2 = 0 , 25x1 + 5x2 = 0

Zigmanuir [339]

Answer:

the system of equation has infinite solution

Step-by-step explanation:

$5x_1 + x_2 = 0$ , $25x_1 + 5x_2 = 0$

Solve the first equation for x_2

Subtract 5x1 on both sides

$5x_1 + x_2 = 0$

$x_2 =-5x_1$

Now substitute -5x1 on second equation

$25x_1 + 5x_2 = 0$

$25x_1 + 5(-5x_1)= 0$

$25x_1-25x_1= 0$

0=0

So the system of equation has infinite solution

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3 years ago

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Simplify (2+7) divided by (7-2 times 2)

Step2247 [10]

1.111.... so just right 1.2

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2 years ago

Jack leaves from school and goes 4 miles north and 3 miles east to reach his home. How far is his home from school?

fiasKO [112]

Answer:

D. 5 miles

Step-by-step explanation:

Jack forms a right triangle with his route: the distance between the school and home is the hypotenuse.

<u>It is equal to:</u>

√4²+3²= √25 = 5 miles

Correct choice is D

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3 years ago

Can someone help me with this?

aivan3 [116]

Step-by-step explanation:

The formula for the volume of a sphere is V = 4/3 πr³.

Given

Volume (v) = 57ft³

$v = \frac{4}{3} \pi {r}^{3}$

$57 = \frac{4}{3} \times 3.14 \times {r}^{3}$

$57 = \frac{12.56}{3} \times {r}^{3}$

$57 = 4.19 \times {r}^{3}$

${r}^{3} = \frac{57}{4.19}$

${r}^{3} = 13.6$

$r = \sqrt[3]{13.6}$

Therefore r = 2.4 ft

I gave my answers by rounding off. so if you don't round off then it's answer is 2.3 ft

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2 years ago

How do you round 3,284,994 to the nearest ten thousand

Ghella [55]

3,290,000 is the answer

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