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3 years ago

What is the value of x in the equation - x - y = 30, when y = 15?

Mathematics

2 answers:

lesantik [10]3 years ago

8 0

Answer:

X is 45

X-15=30

X=30+15

X=45

Step-by-step explanation:

i hope that hepled :)

Vesnalui [34]3 years ago

7 0

Answer:

-15-y=30

Step-by-step explanation:

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Solve for t. d= -16t^2 + 12

IRINA_888 [86]

Answer:

t=√d-12/4 and t=√-d-12/4, d≥12

Step-by-step explanation:

Hope this helps.

3 0

2 years ago

write the slope intercept equation. the graph of f passes through (-6,4) and is perpendicular to the line that has an x-intercep

Nimfa-mama [501]

Answer:

y = $-\frac{1}{3} x$ + 2

Step-by-step explanation:

The slope of the line that has an x intercept of (2,0) and y-intercept of (0,-6) is:

Slope(s) = Change in y ÷ change in x

s = $\frac{0 - -6}{2 - 0}$ = 3

The slope of the perpendicular line to this line with slope of 3 has to have a slope of -1 ÷ 3 = $-\frac{1}{3}$

Reason: The product of slopes of lines perpendicular to each other have to be -1

So the slope of the perpendicular line that passes through (-6,4) is $-\frac{1}{3}$

As mentioned earlier, we derive a slope of a line by dividing the change in y by the change in x

Taking another point (x,y) on the line,

$-\frac{1}{3}$ = $\frac{y - 4}{x - -6}$

$-\frac{1}{3}$ = $\frac{y - 4}{x + 6}$

y - 4 = $-\frac{1}{3}$ x - 2

y = $-\frac{1}{3}$ x + 2

5 0

3 years ago

If you are asked to find 621 divided by 59, how do you know the quotient will be greater than 10 before you actually divide. (my

Nitella [24]

For me, I know that this answer would be greater than 10 because for a fact, 621 and 59 aren't just perfect multiples of 10. But I don't know, because all humans don't really think alike. So, your teacher might say this doesn't work. Then in that case, I am very sorry. :0

But in any case, I hope this helps and have a good night! :D

4 0

3 years ago

Calculate the perimeter of the figure shown below.

Julli [10]

Answer:

Step-by-step explanation:

perimeter means that you add up all the sides do the perimeter is 41

3 0

3 years ago

Find the length of side AB. Give your answer to 1 decimal place.

ehidna [41]

Answer:

Length of side AB = 5.6 cm

Step-by-step explanation:

From the figure attached.

In right triangle ABC,

m∠ABC = 62°

m(BC) = 12 cm

By applying Cosine rule in this triangle,

Cos62° = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

Cos62°= $\frac{AB}{BC}$

0.46947 = $\frac{AB}{12}$

AB = 12 × 0.46947

AB = 5.63

≈ 5.6 cm

Therefore, length of side AB = 5.6 cm

7 0

3 years ago