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lidiya [134]
1 year ago
12

Solve the equation by factoring. x² + 2x - 63 = 0 x = -9, [?]

Mathematics
1 answer:
xeze [42]1 year ago
7 0

Step-by-step explanation:

x² + 2x - 63 = 0

(x+9)(x-7)=0

x=-9 x=7

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What is the value of StartFraction 1 Over 6 Superscript 0 EndFraction? One-sixth 0 1 undefined
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Answer:

1

Step-by-step explanation:

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8 0
3 years ago
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40 + 2b3 when<br> b = 5 and c= 1.2
kramer

9514 1404 393

Answer:

  254.8

Step-by-step explanation:

Substitute the numbers where the variables are and do the arithmetic.

  4c +2b³ = 4(1.2) +2(5³) = 4.8 +250 = 254.8

__

It can also work to let a calculator or spreadsheet do the math for you, once you specify the function.

8 0
2 years ago
Ginny’s favorite cookie recipe requires 1 1/2 cups of sugar to make 24 cookies. How much sugar does Ginny need to make 36 of the
Delicious77 [7]

Ginny needs 2\frac{1}{4} cups of sugar to make 36 cookies.

Step-by-step explanation:

Given,

Sugar cups required for 24 cookies = 1\frac{1}{2}=\frac{3}{2}\ cups

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Let,

x be the number of cups needed for 36 cookies.

Ratio of sugar cups to cookies = x:36\\

Using proportion;

Ratio of sugar cups to cookies :: Ratio of sugar cups to cookies

\frac{3}{2}:24::x:36

Product of mean = Product of extreme

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\frac{24x}{24}=\frac{54}{24}\\x=\frac{9}{4}\\x=2\frac{1}{4}

Ginny needs 2\frac{1}{4} cups of sugar to make 36 cookies.

Keywords: fraction, proportion

Learn more about fractions at:

  • brainly.com/question/96882
  • brainly.com/question/96535

#LearnwithBrainly

7 0
3 years ago
Dan invests £11000 into a savings account. The bank gives 3.9% compound interest for the first 3 years and 4.5% thereafter. How
rodikova [14]
The initial amount of the money is £11,000 and the interest is 3.9% per year for first 3 years and then 4.5% after that. If Dan invests it for 7 years, that means the interest would be 3 years of 3.9% and 4 years of 4.5%.
The calculation would be:

total money= initial amount * interestrate1 * interest 2
total money= £11000 *(100%+3.9%)^3<span>*(100%+4.5%)^4
</span>total money= £11000 *(103.9%)^3 * (104.5%)^4
total money= £11000 * <span>1.121622319 </span>* 1.1925186
total money= £14,713.11

8 0
3 years ago
5(p - 3) = 63<br> Who ever get this right Cash app 300 dollars to u
lesya [120]

Answer:

oh wait nevermind

8 0
3 years ago
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