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ser-zykov [4K]
3 years ago
6

Can someone please help me with these math problems ​

Mathematics
1 answer:
yuradex [85]3 years ago
5 0

Answer: 138

Step-by-step explanation:

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The cashier has been directed to sell an item for half off its regular price of$1.98.what is the sale price
galben [10]
$1.98 divided by 2 is $0.99
So the sale price is $0.99
4 0
3 years ago
Factor completely.
Serga [27]
Factor the polynomial:

4u² – 20u + 25

Rewrite – 20u as – 10u – 10u, and then factor it by grouping:

= 4u² – 10u – 10u + 25

= 2u * (2u – 5) – 5 * (2u – 5)

= (2u – 5) * (2u – 5)

= (2u – 5)² <––– this is the answer.

I hope this helps. =)
5 0
3 years ago
How to simplify this question
ANEK [815]
Simplification = 3.5x + 2.5x
Result = 6x
6 0
3 years ago
Jordan solved the equation −7x + 25 = 48; his work is shown below. Identify the error and where it was made.
fenix001 [56]

Answer:

step 3: he should have divided both sides by -7

8 0
3 years ago
If a = 12 and 120% of a is equal to 80\% of bthen what is a + b ?
Novosadov [1.4K]

Answer:

The answer is 30

Step-by-step explanation:

First you have to find 120% of a (12).

\frac{12}{1}  \times  \frac{120}{100}  = 14.4

Therefore; 14.4 is 80% of b, and we are trying to find 100% of b

14.4 = 80\% \\ x = 100\%

we do not know what is 100% therefore we call it *x*. In order to find this unknown value *x* we cross multiply.

14.4 \times 100\% = 80\% \times x

This is the same as saying;

14.4  \times 1 = x \times  \frac{4}{5}

100% percent would be 1 because it is the whole number we are trying to find. The 80% would be 4/5. To get 4/5 you can simply break down 80/100 ( this is 80% as a fraction).

so the new equation is: 14.4= 4/5x

We divide both sides by 4/5. Then we will get x tobe equal to 18. Therefore b is 18. We were asked to find (a + b) so.<em> </em><em>1</em><em>8</em><em>+</em><em>1</em><em>2</em><em> </em><em>=</em><em> </em><em>30</em>

4 0
1 year ago
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