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3 years ago

What is the value of 12d-7c if d = 2 and c = 3?

Mathematics

1 answer:

wlad13 [49]3 years ago

3 0

Answer:

Step-by-step explanation:

= (12 x 2) - (7 x 3)

= 24 - 21

= 3

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Work out 9/11 x 2/7 so yh

Nesterboy [21]

Answer:

18/77

Step-by-step explanation:

9*2 = 18

11*7= 77

18/77

3 0

2 years ago

I<br> Evaluate −4x+y when x=5/4 and y=1/5. Write your answer as a mixed number in simplest form.

Daniel [21]

Answer:

$-4\frac{4}{5}$

Step-by-step explanation:

-4x + y

Plug in your values for x and y

-4 (5/4) + (1/5)

-20/4 + 1/5

-5 + 1/5

= - 4 4/5

7 0

3 years ago

What would be the answer to number nine

a_sh-v [17]

Answer:

x=9.06

Step-by-step explanation:

We have the hypotenuse and we want the opposite of angle a.

so we do

sin65 = x/10.

Solve for x by simplifying both sides of the equation, then isolating the variable.

4 0

4 years ago

Help please please show work

Nana76 [90]

Answer: $1267.18yd^2$

Step-by-step explanation:

$Formula: \pi r(r+\sqrt{h^2+r^2} )$

We need;

$\pi = 3.14\\r=?\\h=18yd$

We don't have the radius, but we do have the diameter. A diameter is twice the radius. Therefore, we can divide the diameter by 2 in order to obtain the radius.

$\frac{d}{2}= \frac{24}{2}=12yd$

Now plug this info into the formula.

$(3.14)(12yd)[(12yd)+\sqrt{(18yd)^2+(12yd)^2} ]$

Let's solve the square root first.

$(3.14)(12yd)[(12yd)+\sqrt{324yd^2+144yd^2} ]$

$(3.14)(12yd)[(12yd)+\sqrt{468yd^2} ]$

$(3.14)(12yd)[(12yd)+\sqrt{468yd^2} ]\\(3.14)(12yd)(12yd+21.63yd)$

Now solve the sum

$(3.14)(12yd)(33.63yd)\\$

Multiply

$1267.18yd^2$

5 0

4 years ago

Which equation represents a line which is parallel to the line 2x + 3y = -6?

Burka [1]

Answer:

y = 2/3 x - 4/3 - so the slope is 2/3. The slope of a line parallel to it is also 2/3.

Step-by-step explanation:

8 0

3 years ago