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2 years ago

Not sure how to go at this at all, please help.

Mathematics

2 answers:

ss7ja [257]2 years ago

8 0

Here ya go answer down below

AleksAgata [21]2 years ago

3 0

Step-by-step explanation:

Substitution means to substitute a variable with the other variable in the equation.

Like, in this equation, y = -5x.

Substituting it in the equation y = 2x - 14, we get,

=> -5x = 2x - 14

=> -7x = -14

=> 7x = 14

=> x = 2

Now, putting value of x in y = -5x, we get,

y = -5 (2) = -10

Hope it helps.

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Answer:

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Step-by-step explanation:

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3 years ago

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For combining like terms: it is 7z

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2 years ago

Read 2 more answers

A computer company produces an extremely light laptop and they claim it is the lightest on the market weighing only 32 ounces. t

Darina [25.2K]

Solution: We are given:

$\mu=0.33, \sigma =0.7$

Let $x$ be the weight (oz) of laptop

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To find the this probability, we need to find the z score value.

The z score is given below:

$z=\frac{x-\mu}{\sigma}$

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Now, we have to find $P(z>-1.43)$

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$P(z>-1.43)=0.9236$

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4 0

2 years ago

A beacon is flashing on top of a 50 foot tower. A 6 foot tall man walks constantly away from the tower at 5 feet/sec. At the ins

Viefleur [7K]

Answer: $\frac{253}{44}$

Step-by-step explanation:

ignore the "at the instant the man is 30 feet away" part, set it as X and the man's shadow as Y.

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Solve for it we get 44y = 6x

Differentiate relative to time t, we get 44y' = 6x'.

change in x (x') is equal to 5. And we get the answer y' = $\frac{33}{44}$ .

the $\frac{33}{44}$ ft/sec is the rate of which the length of the shadow is changing. add 5 to it for the rate of the tip of his shadow moving away from the tower.

7 0

1 year ago

Please help!!! And please be accurate!!! Thank you!!

dem82 [27]

Answer:

BCDA is equivalent to FGHE

A is equivalent to angle E

B is equivalent to angle F

C is equivalent to angle G

D is equivalent to angle H

Step-by-step explanation:

1st step is just figuring out which sides corresponds with which.

A is equivalent to angle E

B is equivalent to angle F

C is equivalent to angle G

D is equivalent to angle H

On the last one I am confused by what it is asking, but here is what I think:

The scale factor from the big figure to the small figure is 1.5 because of 15/10=1.5

12/8=1.5 and so on.

3 0

4 months ago