1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tatiana [17]
3 years ago
13

(a+4)² - 3² Factored out

Mathematics
1 answer:
uranmaximum [27]3 years ago
8 0

Answer:

a =  - 7

a =  - 1

Step-by-step explanation:

(a+4) {}^{2}  - 3 {}^{2}  \\ a {}^{2}  + 8a + 16 - 9 \\ a {}^{2}  + 8a + 7 \\ a {}^{2}  + a + 7a + 7 \\ a(a + 1) + 7(a + 1) \\ (a + 7)(a + 1) \\ a + 7 = 0 \:  \:  \:  \: or \:  \:  \:  \: a + 1 = 0 \\ a =  - 7 \:  \:  \:  \: \:  \:  \:  \:  or \:  \:  \: a =  - 1

You might be interested in
A circular pool with a diameter of 18 ft will have a uniform 4 ft concrete walkway poured around it. If the concrete cost $4.25
svetoff [14.1K]
Below is the solution:

volume = lwh 
<span>= 18(3)(1/3) </span>
<span>= 18 cubic feet
</span>
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
3 0
3 years ago
Choose the equation of the horizontal line that passes through the point (−5, 9).
shtirl [24]
The correct answer is:  [B]:  " y = 9 " .
_____________________________________________
6 0
4 years ago
Read 2 more answers
Why do you cross-multiply when you solve proportions?
Llana [10]

Answer:  The reason you cross multiply fractions is to compare them. Cross multiplying fractions tells us if the two fractions are equal or which one is greater. This is especially useful when you are working with larger fractions that you aren't sure how to reduce.

It works cause they have the same denominator

bruh

5 0
3 years ago
Seth's mother brought home 3/4 of a chocolate cake and 1/2 of a vanilla cake that was left from a party at her work. Seth ate 1/
Oduvanchick [21]

Answer:

1/4 of the cake.

Step-by-step explanation:

Since he ate 1/3 of 3/4 of the chocolate cake, we will need to multiply fractions to solve this.

\frac{3}{4} * \frac{1}{3} =  \frac{3}{12}  = \frac{1}{4}

Therefore, he ate 1/4 of the entire cake.

5 0
4 years ago
340 students went to the first school dance, the last school dance 306 students attended. What is the percent of change between
Fofino [41]

Answer:

10.59%

Step-by-step explanation:

percentage of change is given by

{(old number - new number)/old number} * 100

_________________________

given

no. of student  went to the first school dance = 340

no. of student  went to the last school dance = 306

Percentage of change between two dance

= ((no. of student  went to the first school dance - no. of student  went to the last school dance)/ no. of student  went to the fist school dance)*100

= (340 - 306)/340 *100

= (36/340 )*100 = 10.59%

The percent of change between the two dances 10.59%.

4 0
4 years ago
Other questions:
  • Convert 35.7 mm to centimeters.<br> a.0.357 cm<br> b.3.57 cm<br> c.35.7 cm<br> d.357 cm
    9·1 answer
  • Divide a given line segment into four congruent parts. Bisect once and then bisect again the obtained half segments.
    9·2 answers
  • Which of the following best describes the equation below? y=-6x+7
    10·1 answer
  • Which equation is correctly rewritten to solve for y?
    6·1 answer
  • What is the equation for the line?
    5·1 answer
  • They crawled in until 51,416 had
    5·1 answer
  • Suppose that you have two different algorithms for solving a problem of size n. The first algorithm uses exactly n(log n) operat
    6·1 answer
  • Which expression is equivalent to 4/9
    10·1 answer
  • Identify the constant of proportionality in the graph.
    7·2 answers
  • I need help on this question!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!