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3 years ago

Which part of the expression is a factor 7(x+8) A. 21 B.8 C. 3x D. 7

Mathematics

2 answers:

Sever21 [200]3 years ago

8 0

It is 7. None of the other ones fit at all

VikaD [51]3 years ago

7 0

It’s a letter D.7

Hope help this

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Genna threw 45 grams of sugar into 55 grams of water. She made ___ grams of ___% sugar syrup.

OlgaM077 [116]

Answer:

She made She made 100 grams of 45% sugar syrup.

Step-by-step explanation:

Genna added 45 grams of sugar into 55 grams of water.

Total amount she mixes = 45 + 55 = 100 grams.

Percentage of sugar in total mixture (sugar syrup) = 45 grams sugar in 55 grams syrup.

$\text{\% by mass}=\dfrac{\text{mass of solute}}{\text{(mass of solute + mass of solvent)}} \times 100$

Here, Solute is sugar and Solvent is water.

mass of solute = 45

mass of solute + mass of solvent = 100

Putting values, we get,

$\text{\% by mass}=\dfrac{45}{100} \times 100$

$\text{\% by mass}=45\%$

Thus, She made She made 100 grams of 45% sugar syrup.

4 0

3 years ago

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1. Mr. Blu has a rectangular kitchen that is 3x units wide and 4xy + 5x9y2 units long. He is replacing the old flooring with squ

krek1111 [17]

Answer:

Step-by-step explanation:your mim

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4 years ago

Which expression is equivalent to the following complex fraction?

Katarina [22]

Answer:

The first option is correct, (-2y + 5x) / (3x - 2y)

Step-by-step explanation:

$(\frac{-2}{x} + \frac{5}{y} ) \div (\frac{3}{y} - \frac{2}{x})\\= \frac{-2y + 5x}{xy} \div \frac{3x - 2y}{xy}\\= \frac{-2y + 5x}{xy} \times \frac{xy}{3x - 2y}\\= \frac{-2y + 5x}{3x - 2y}$

6 0

3 years ago

Read 2 more answers

Can sumone help me #11

Maru [420]

Answer:

25$ per month

Step-by-step explanation:

100$ was saved every 4 months so you divide that by four. You will get 25 which is your rate. (25$ per month)

5 0

3 years ago

Select all of the expressions that are undefined. csc(0) sec(0) csc(pi/2) sec(pi/2) csc(pi) sec(pi)

Softa [21]

Answer:

The answer is "undefined, 1, undefined, undefined, and -1".

Step-by-step explanation:

Finding expression:

$i) \csc(0) = \ cosec 0^{\circ} \\\\= \frac{1}{sin 0^{\circ}}\\\\= \frac{1}{0} \ \\\\$ undefined

$ii) \csc (\frac{\pi}{2})\\\\= cosec \frac{\pi}{2}\\\\= cosec \ 90^{\circ}\\\\= \frac{1}{\sin \ 90^{\circ}}\\\\= \frac{1}{1} \\\\=1\\$

$iii) \sec \frac{\pi}{2} \\\\= sec \ 90^{\circ}\\\\= \frac{1}{\cos 90^{\circ}}\\\\= \frac{1}{0} \\$ undefined

$iv) \csc(pi)\\\\= \ cosec (180^{\circ})\\\\= \frac{1}{\sin 180^{\circ}}\\\\= \frac{1}{0}\\$ undefined

$v) sec (\pi) \\\\=\frac{1}{\cos 180^{\circ}}\\\\= \frac{1}{-1}\\\\= -1$

7 0

3 years ago