3 years ago

Giving 10 points to anyone who answers these

Mathematics

1 answer:

sineoko [7]3 years ago

7 0

I'm not sure about the first question.
Did you post the question correctly?

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Tickets for a play cost $4 for each child and $8 for each adult. If there are only 20 children's tickets sold, which of the foll

dimaraw [331]

What are the answer choices?

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2 years ago

−7x−6y=2<br> 7x+4y=−6<br> solve for x and y

ikadub [295]

Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:x=-2,\:y=2}$

Step-by-step explanation:

$\begin{bmatrix}-7x-6y=2\\ 7x+4y=-6\end{bmatrix}$

$\mathrm{Substitute\:}x=-\frac{2+6y}{7}$

$\begin{bmatrix}7\left(-\frac{2+6y}{7}\right)+4y=-6\end{bmatrix}$

$\begin{bmatrix}-2-2y=-6\end{bmatrix}$

$\mathrm{For\:}x=-\frac{2+6y}{7}$

$\mathrm{Substitute\:}y=2$

$x=-\frac{2+6\cdot \:2}{7}\\\\x=-2$

5 0

2 years ago

A number that will exceed the unknown number<br> by <br> 5

lora16 [44]

Step-by-step explanation:

click on the image for the full answer

6 0

3 years ago

Plz help with these fast!

larisa [96]

Answer:

7⁴ is 2401

1⁵ is 1

Step-by-step explanation:

7x7x7x7 is 2,401

1x1x1x1x1 is 1

7 0

3 years ago

Calculate the surface area of this box.

julia-pushkina [17]

Answer:

36 cm^2

Step-by-step explanation:

S.A. = 2 (lw + wh + lh)

S.A. = 2 ((4)(2) + (2)(2) + (4)(2))

S.A. = 2 (8 + 4 + 6)

S.A. = 2 (18)

S.A. = 36

4 0

2 years ago

Read 2 more answers