MATHEMATICS HIGH SCHOOL

4a²+4a   x a²-5a
a²-25         8a

Answers

Answer 1
Answer: (4a^2 + 4a)/(a^2-25) x (a^2-5a)/8a
Factor the possible ones to be easier
[4a(a+1)]/[(a-5)(a+5)] x [a(a-5)/8a]
Cancel the a-5
[4a(a+1)]/[a+5)] x a/8a
cancel the 4a and 8a(8a becames 2)
[a+1]/[a+5] x a/2
now multiply
[a(a+1)]/[2(a+5)]<---- can be the answer or:
(a^2+a)/(2a+10)

Related Questions

The relationship between the number of months and cumulative cell phone cost is represented by the scatter plot shown.Cumulative Cost6005002 400Cumulative Cell Phone Cost (dollars)(10, 504)(9,470)(8,418).(7, 361)(6, 324).(5, 253)(3, 162) •(4, 196)300200100+(1,55) (2, 108)8910Number of MonthsA line of best fit for this data is C = 51m + 4.4, where is the cumulative cell phone cost and m is the number of months.Using this data, which value is the best prediction of the cumulative cell phone cost after 18 months?
A librarian wants to know many of her card members would buy used DVDs from the library. The library has 1162 card members. The librarian randomly selects 80 of those members and finds that 63 of them would buy used DVDs from the library. Based on this sample, about how many of the card members would buy used DVDs from the library?
Solve for c.|c- 2| >3 Write a compound inequality like 1 3. Use in tegers, proper fractions, or improper fractions in simplest form.
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Simplify the expressions using the distributive property.8(7x + 3)5(5y - 2)

Answers

Simplify the expressions by using the distributive property.

\begin{gathered} 8(7x+3)=8\cdot7x+3\cdot8 \n =56x+24 \end{gathered}

For second expression,

\begin{gathered} 5(5y-2)=5\cdot5y+5\cdot(-2) \n =25y-10 \end{gathered}

Round to the nearest hundredth. 7.546
A. 7.546
B. 7.55
C. 7
D. 7.5

Answers

7.55 would be correct because if there is a 5 or greater it goes up a number if it is a 4 or lower it stays the same
B. 7.55

7.546⇒the underlined is the hundredths place 
When rounding it to nearest hundredth, you will look at the digit next to it at the right.
7.546⇒six is greater than 5 so the hundredths place would round up to the next digit which is 5. 
7.546-7.55

Elone year, Sales increased by 15%.the following year Sales increased by 1.8% to.
calculate the overall percentage increase in sales

Answers

Answer:

increase 15% = 1+(15/100)=1.15

increase 1.8% =1+(1.8/100)=1.018

evolution coefficient: 1.15*1.018=1.1707

overall percentage increase

(1.1707-1)*100=17.07%

Step-by-step explanation:

What fraction added to 3/8 gives you the sum of 1

Answers



5/8 is the fraction that if added to 3/8 gives you the sum of 1 whole

The pay-scale for Pedro's stores is based on the education level of his employees. The education levels are shown for the employees at his two stores. Which matrix correctly displays the total number of employees for the two stores based on their education levels?

Answers

The total of the two matrices is found by adding corresponding elements:

\left[\begin{array}{cc}5+2&3+3\n22+17&15+27\n13+15&12+18\end{array}\right] =\left[\begin{array}{cc}7&6\n39&42\n28&30\end{array}\right]

This matches selection A.

WILL GIVE BRAINLIEST ANSWER!!!!Which of the following points satisfies the inequality 2x - 3y < 1?

(-2,1)
(1/2, 0)
(2, -1)

Answers

Check first one:
2(-2)- 3(1) < 1
-4 -3 < 1
-7 < 1
This is true, let's check others, just to be sure
Check second one:
2(1/2) - 3(0) < 1
1 - 0 < 1
This is false
Check third one :
2(2)- 3(1) < 1
4- 3 < 1
This is false

So answer is (-2,1)
(-2,1) satisfies
2×-2-3×1=-7
-7<1
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