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3 years ago

Find the slope of y=5x-7

Mathematics

1 answer:

eimsori [14]3 years ago

5 0

Answer:

the slope is 5

Step-by-step explanation:

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This graph shows the linear relationship between the time in seconds, x, for Caroline's walk and the distance in meters, y, Caro

serg [7]

Caroline will walk 70 meters in 1 hour.

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3 years ago

Factor (16a2 - 49) completely

riadik2000 [5.3K]

Answer:

(4a+7)(4a-7)

Step-by-step explanation:

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3 years ago

X=16-4y. systems of equations 3x+4y=8<br> substitution

alina1380 [7]

Answer:

x=-4 y=5

Step-by-step explanation:

Rewrite equations:

x=−4y+16;3x+4y=8

Step: Solvex=−4y+16for x:

x=−4y+16

Step: Substitute−4y+16forxin3x+4y=8:

3x+4y=8

3(−4y+16)+4y=8

−8y+48=8(Simplify both sides of the equation)

−8y+48+−48=8+−48(Add -48 to both sides)

−8y=−40

−8y

−8

−40

−8

(Divide both sides by -8)

y=5

Step: Substitute5foryinx=−4y+16:

x=−4y+16

x=(−4)(5)+16

x=−4(Simplify both sides of the equation)

Answer:

x=−4 and y=5

6 0

2 years ago

Help please on these thanks

tia_tia [17]

1. i cant see it 2. g=68 h=112 3. i=111 j=69 4. m=37 k=37 l=143

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2 years ago

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I need help with these three problems (college algebra)

Paraphin [41]

5. After 6 hours, the concentration is halved. After 12 hours, it will be quartered. If the original concentration is 200 nmol, a quarter is 50 nmol.

14. The population doubles after 3 hours, and a day is 24 hours. That means that the original population should be multiplied by $2^{24/3}$ , or $2^8$ . 3 million times $2^8$ is 3 * 256 million, or 768 million.

15. The concentration is halved every 8 hours and the original concentration is 100 nmol. So now, how many times do you halve 100 to get to 12.5?

100/2 = 50, 50/2 = 25, 25/2 = 12.5. That's three times. 3 * 8 is 24 hours, or 1 day.

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3 years ago

Read 2 more answers