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Olegator [25]
3 years ago
10

Solve each question mentally -3x = 21

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
6 0
X = -7

3 • 7 = 21

-3 • (-7) = 21

If you multiply two negative numbers you’ll end up with a positive. Thus, - 3 (-7) = 21.
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Camillo needs 2,400 oz of jelly for the food challenge. If 48 oz of jelly cost $3.84, how much will Camillo spend on jelly? Expl
luda_lava [24]

Answer:

  $192

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
What is the solution to this problem: (4/9)/(2/3)/(5/6)
valentina_108 [34]
(4/9)/(2/3)/(5/6)

First, invert and multiply. / Your problem should look like: \frac{4}{9}   \\  \frac{2}{3} × \frac{6}{5} 
Second, invert and multiply. / Your problem should look like: \frac{4}{9} × \frac{3}{2} × \frac{6}{5} 
Third, apply this rule: \frac{a}{b} × \frac{c}{d} . / Your problem should look like: \frac{4 x 3 x 6}{9 x 2 x 5} 
Fourth, simplify 4 × 3 × 6 to 72. / Your problem should look like: \frac{72}{9x2x5}
Fifth, simplify 9 × 2 × 5 to 90. / Your problem should look like: \frac{72}{90}
Sixth, simplify. / Your problem should look like: \frac{4}{5}

Original answer: \frac{4}{5}
Answer as decimal: 0.8


6 0
3 years ago
Given f(x) = 21x + 12, find f(5)
Lisa [10]

Answer:

117

Step-by-step explanation:

f(x) = 21x + 12

f(5) = 21(5) + 12

f(5) = 105 + 12

f(5) = 117

7 0
3 years ago
PLEASE HELP!
inn [45]
2*(-11) if its multiple choice but im not sure
6 0
3 years ago
7.5×$6.74 show the work
Sindrei [870]

Answer:7.50x6.74 =50,5500


Step-by-step explanation:


4 0
3 years ago
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