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3 years ago

Number 9 on my integrated geometry test

Mathematics

1 answer:

Advocard [28]3 years ago

4 0

Answer:

4/5

Step-by-step explanation:

With reference angle E

Sin E = FG / EF

= 4/5

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Nick and June win some money and share it in the ratio 4:5. Nick gets £40. How much did June get?

sineoko [7]

Answer:

June gets $\£50$

Step-by-step explanation:

Let

x ----> amount of money Nick gets

y ----> amount of money June gets

we know that

$\frac{x}{y}=\frac{4}{5}$ -----> equation A

$x=40$ ----> equation B

solve the system by substitution

substitute equation B in equation A

$\frac{40}{y}=\frac{4}{5}$

solve for y

Multiply in cross

$(40)(5)=y(4)\\y=200/4$

$y=\£50$

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4 years ago

use the definition of the derivative to find the derivatives of the function with respect to x. Please help with numbers 3 and 4

irga5000 [103]

Jsisjsjjsjsj jsjsjjsjsjsjsjs jsjsjsjsj

6 0

4 years ago

If one of the roots of the quadratice quation x2+kx-12=0is4,what is the value of k?

uysha [10]

<h3>Given Equation:</h3>

$\huge \purple {\rm { {x}^{2} + kx - 12 = 0}}$

<h3>Value:</h3>

$\huge \purple {\rm {x = 4}}$

$\huge \purple {\rm {The \: value \: of \: k.}}$

<h3>Solution:</h3>

$\huge \purple {\rm { {(4)}^{2} + k(4) - 12 = 0}}$

$\huge \purple {\rm {or, \: 16 + 4 k - 12 = 0}}$

$\huge \purple {\rm {or, \: 4k = - 4}}$

$\huge \purple {\rm {or, \: k = \frac{ - 4}{4} = - 1}}$

<h2>Answer:</h2>

$\huge \purple {\sf {The \: value \: of \: k \: is \: -1}}$

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3 years ago

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Brent divided three and one half by seven. What number did he get?

Katen [24]

I believe the answer is 1/2

I changed 3 1/2 to an improper fraction (7/2), then I had to find the reciprocal of 7, which is 1/7. I then multiplied 7/2 by 1/7 which gave me 7/14, which I reduced to 1/2.

Hope this answers your question.

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3 years ago

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5 x 4000 step by step for khan

nasty-shy [4]

Answer:

Step-by-step explanation:

5×4000

=20,000 answer

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3 years ago