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2 years ago

HELPPPPP 7 8 ÷ 1 4 A) 3 1 2 B) 4 C) 7 16 D) 7 32

Mathematics

2 answers:

Svetllana [295]2 years ago

6 0

Answer:

A) 3 1/2

Explanation:

$\hookrightarrow \sf \dfrac{7}{8} \div \dfrac{1}{4}$

rewrite the following

$\hookrightarrow \sf \dfrac{7}{8} * \dfrac{4}{1}$

join both fractions

$\hookrightarrow \sf \dfrac{7*4}{8}$

multiply

$\hookrightarrow \sf \dfrac{28}{8}$

simplify the following

$\hookrightarrow \sf \dfrac{7}{2}$

turn into mixed fraction

$\hookrightarrow \sf 3\dfrac{1}{2}$

Gemiola [76]2 years ago

6 0

Answer:

$\dfrac{7}{2}$

Step-by-step explanation:

Given expression:

$\dfrac{7}{8} \div \dfrac{1}{4}$

Simplify the expression:

$\implies \dfrac{7}{8} \div \dfrac{1}{4}$

$\implies \dfrac{7 \div 1}{8 \div 4}$

$\implies \dfrac{7}{2}$

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Use the fundamental counting principle to determine all the possible outcomes from rolling a die once then spinning the spinner.

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The answer is there are 6 possible outcomes: {1, 2, 3, 4, 5, 6} Hope this helps!

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3 years ago

E is 3 more than d. f is 5 less than d. Write an expression for e in terms of d

Nataly_w [17]

Answer:

Part A:

We are given that E is 3 more than D. This means that to get the value of E, we will simply add 3 to the value of D

Therefore:

E = D + 3

Part B:

We are given that F is 5 less than D. This means that to get the value of F, we will simply subtract 5 from the value of D

Therefore:

F = D - 5

Part C:

To get the value of E-F, we will simply subtract the equation we obtained from part B from the equation we obtained from part A

Therefore:

E - F = (D+3) - (D-5)

E - F = D + 3 - D + 5

E - F = 8

Hope this helps :)

Step-by-step explanation:

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3 years ago

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fenix001 [56]

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4 years ago

Read 2 more answers

Work out b(4½-3⅔)+1⅔

Zolol [24]

Answer:

2 $\frac{1}{2}$

Step-by-step explanation:

Change the mixed numbers to improper fractions

( $\frac{9}{2}$ - $\frac{11}{3}$ ) + $\frac{5}{3}$ ← the LCM of 2 and 3 is 6

= $\frac{9(3)}{2(3)}$ - $\frac{11(2)}{3(2)}$ + $\frac{5(2)}{3(2)}$

= $\frac{27}{6}$ - $\frac{22}{6}$ + $\frac{10}{6}$

= $\frac{5}{6}$ + $\frac{10}{6}$

= $\frac{15}{6}$

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3 years ago

How much of other chemicals must be evaporated from 400 grams of a hand sanitizer

yulyashka [42]

Answer:

24 g

Step-by-step explanation:

We first find the mass of 24 % alcohol in 400 g of hand sanitizer. Let x be the mass of alcohol. So, x/400 × 100 % = 24 %

x/400 = 0.24

x = 0.24 × 400

= 96 g

The mass of the other chemicals is thus 400 g - 96 g = 304 g

We now find the mass of 30 % alcohol in 400 g of hand sanitizer. Let y be the mass of alcohol. So, y/400 × 100 % = 30 %

y/400 = 0.30

y = 0.30 × 400

= 120 g

The mass of the other chemicals is thus 400 g - 120 g = 280 g

The mass of other chemicals that needs to be evaporated is thus 304 g - 280 g = 24 g

5 0

3 years ago