2 years ago

Need help ill give brainlest!!!!!!!!! HURRYYYY

Mathematics

2 answers:

avanturin [10]2 years ago

8 0

Answer:

Step-by-step explanation:

grigory [225]2 years ago

6 0

hmm i dont know this is a pretty hard 1

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Kirsten calculated the mean of 10 quiz scores. Later she was told there was an error in grading one of her quizzes. A quiz score

inessss [21]

The mean will be 5 points higher...so...c would be the answer!

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3 years ago

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Find the missing number in each sequence.<br><br> 40, ___ , 37 1/3 , 36

seraphim [82]

The common difference is 1 1/3
40-1 1/3= 38 2/3
38 2/3-1 1/3=37 1/3
37 1/3-1 1/3=36
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If y varies directly as x and y = 21 when x = 5, find x when y = 42.

Lorico [155]

Answer: 10

<u>Step-by-step explanation:</u>

varies directly means: $\frac{y}{x} = k$

Step 1: solve for k ⇒ $\frac{21}{5} = k$

Step 2: plug in the given value and k to solve for the missing value: $\frac{42}{x} = \frac{21}{5}$

42(5) = 21(x)

$\frac{42(5)}{21} = \frac{21(x)}{21}$

2(5) = x

10 = x

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2 years ago

If triangle ABC is congruent to triangle DEF, which statement is not true?

ArbitrLikvidat [17]

The answer would be b.) angle C is congruent to angle E.
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2 years ago

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Problem 3

Murljashka [212]

Answer:

$-\frac{2}{5}$

Step-by-step explanation:

Given expression:

2x + 5y = -10

The equation of a straight line is;

y = mx + c

y and x are the coordinates

m is the slope

c is the intercept

Now;

let us write the given expression in slope intercept format;

2x + 5y = -10

5y = -2x - 10

y = $-\frac{2x}{5}$ - 2

So, the slope of the line is $-\frac{2}{5}$

8 0

2 years ago