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3 years ago

PLEASE HELP IM TIMED

Mathematics

1 answer:

seropon [69]3 years ago

7 0

Answer:

first one = 15x+30y-220

second one = 2.4x-4.4

Step-by-step explanation:

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Can someone please help me

Slav-nsk [51]

Answer:

Step-by-step explanation:

The sum of the angles of the triangle add up to 180 degrees.

x and y are equal to each other in this type of the triangle.

4 0

2 years ago

The number of items (N) that can be purchased for a given amount of money is inversely proportional to the cost (C) of an item.

mars1129 [50]

Answer:

436 items

Step-by-step explanation:

When a quantity A is inversely proportional to another quantity B, we can write:

$A=\frac{k}{B}$

Where k is the proportionality constant [that we need to find]

For this problem, we can write the ratio as:

$N=\frac{k}{C}$

Now given N = 480 and C = 4.90, we first find k:

$N=\frac{k}{C}\\480=\frac{k}{4.90}\\k=4.90*480\\k=2352$

Now, as second step, we need this time to find N, when

C = 5.40

Note, we know know k = 2352, so we find N:

$N=\frac{k}{C}\\N=\frac{2352}{5.40}\\N=435.55$

Rounding to next whole number, we have 436 items

5 0

3 years ago

the number of years that brad has been on the soccer team is 2 less than 5 times the number of years that Scott has.in total,the

Alexeev081 [22]

Assume the following:

Brad has been in the soccer team for b years.

Scot has been in the soccer team for s years.

"The number of years that brad has been on the soccer team is 2 less than 5 times the number of years that Scott has"

means: b=5s-2

"in total,the boys have been on the soccer team for 10 years."

means: b+s=10

so we have the equations:

i) b=5s-2

ii) b+s=10

substitute b in ii) with 5s-2, as they are equal, from i

(5s-2)+s=10

5s-2+s=10

6s=12

s=2,

then , from b+s=10, b=8

Answer: Brad has been in the team for 8 years.

7 0

3 years ago

Inequality 2x > x + 7 is equivalent to ?

Pavel [41]

Answer:

x>7

Step-by-step explanation:

We do 2 steps

2x > x + 7

that means

2x - x > x - x + 7

then

x > 7

That is the answer. Hope it useful for you!

4 0

3 years ago

HELP ME WHAT THE ANSERW Lisa has a scholarship for all four years she attends collage what is the total amount of the scholarshi

krok68 [10]

12,000 × .75= 9,000 then multiply by 4. Your total is 36,000

8 0

3 years ago