2 years ago

HELP PLEASE. 10 POINTS !!!!!!! ASAPPPP

Mathematics

1 answer:

Temka [501]2 years ago

3 0

7x+4y=39 , 2x+4y=15
X-5 and y -1

You might be interested in

Help Please!! What is the value of a? Enter your answer in the box. a =

Talja [164]

Answer:

a=15

Step-by-step explanation:

By pythagoras' theorem

25²=20²+a²

625=400+a² group like terms

a²=625-400

a²=225

$\sqrt{a {}^{2} } = \sqrt{225}$

therefore a=15

6 0

2 years ago

A ski rental store rents a pair of skis for $44 a day and a snowboard for $58 a day. Yesterday, the store made $2,232 on ski and

Katen [24]

First, let the number of skis rented by x and the number of snowboards rented by y. We can then assemble the first equation from the amount of money made from the rentals.

44x + 58y = 2232

The second equation can come from the fact that 9 more skis were rented than snowboards.

y = x - 9

Therefore our system is:

44x + 58y = 2232

y = x - 9

3 0

3 years ago

Explain how you could find the difference of 1 and 0.1978.

weqwewe [10]

You would just subtract .1978 from 1

8 0

3 years ago

U can start immediately I already got the answer I just need to see if i got it right and understand

umka21 [38]

ANSWER

80 units²

EXPLANATION

One way to solve this is to find the area of the blue square and the subtract the areas of the red triangles:

The blue square is 12 units long by 12 units wide. Its area is:

$A_{\text{square}}=12\times12=144$

Then, the area of the big triangle, which has a base 12 units long and a height of 10 units, is:

$A_{\text{traingle}1}=\frac{12\times10}{2}=\frac{120}{2}=60$

The smaller triangle has a base of 4 units and a heigth of 2 units. Its area is:

$A_{\text{triangle}2}=\frac{4\times2}{2}=\frac{8}{2}=4$

So the total area of the figure is:

$\begin{gathered} A=A_{\text{square}}-A_{triangle1}-A_{triangle2} \\ A=144-60-4 \\ A=80 \end{gathered}$

8 0

1 year ago

How many elements are in the set {whole numbers between 3 and 15}?

densk [106]

It is 11 elements :)

6 0

2 years ago