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myrzilka [38]
4 years ago
11

Solve the quadratic equation by factoring. b^2+b-30=0

Mathematics
1 answer:
Fantom [35]4 years ago
8 0

Answer:

(b-5)(b+6)=0

Step-by-step explanation:

i call it "reverse FOIL"

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At a concert the ratio of adults to children is 4:5. There are 720 children in a concert how many adults are there?
zepelin [54]

Answer:

576 adults

Step-by-step explanation:

The 5 part of the ratio relates to 720 children, then

720 ÷ 5 = 144 ← value of 1 part of the ratio , then

4 parts = 4 × 144 = 576 ← number of adults

7 0
3 years ago
Read 2 more answers
What is the equation of the line?
xxMikexx [17]
Hi there!

The answer is D.

Since the y intercept of the equation is 9 and the slope is negative 3, after multiplying the entire equation by -1, we will get D.

Hope this helps!
8 0
4 years ago
Yi's average for her first 3 tests is 88. what musit she score on her last test to bring her average up to 90
timofeeve [1]
Her average now is 88.
She needs to bring it up to a 90.

Let's start with if she gets a 90.
88 + 90 = 178
178/2 = 89
A 90 would only get her an average of 89, so you need to go higher.

88 + 91 = 179
179/2 = 89.5

88 + 92 = 180
180/2 = 90


She must get at least a 92 to get an average of 90.
6 0
4 years ago
How do you solve this problem?
SCORPION-xisa [38]

Answer:

tenes vieja

Step-by-step explanation:

atu vieja se lo voy a meter y la va a salir por la boca xd xd xd xd xd xd

8 0
3 years ago
Solve for g.<br> -3+5+6g=11-3g−3+5+6g=11−3g
PtichkaEL [24]

Answer: \mathrm{No\:Solution}

Step-by-step explanation:

\begin{bmatrix}-3+5+6g=1\\ 1-3g+5+6g=11-3g\end{bmatrix}

\begin{bmatrix}1-3\left(-\frac{1}{6}\right)+5+6\left(-\frac{1}{6}\right)=11-3\left(-\frac{1}{6}\right)\end{bmatrix}

\begin{bmatrix}\frac{11}{2}=\frac{23}{2}\end{bmatrix}

\frac{11}{2}=\frac{23}{2}\:\mathrm{\:is\:false,\:therefore\:the\:system\:of\:equations\:has\:no\:solution}

4 0
3 years ago
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