3 years ago

Answer asap! will give brainliest, question in pic!

Mathematics

1 answer:

Kisachek [45]3 years ago

7 0

Answer:

Im 95% sure that it is most likely the first one.

Step-by-step explanation:

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maria bought 1224 cm of ribbon for her art picture at $0.75/m. how much did she pay for ribbon, to the nearest cent?

k0ka [10]

Data:
Tape size = 1224 cm → 12.24 m
Price per size = $0.75/m

Solving: Rule of three (directly proportional)

$ (price) __ (Size)
0.75 ----------- 1 m
y --------------- 12.24 m

Multiply cross

 $y = 0.75*12.24$
$\boxed{\boxed{y = \$\:9.18}}\end{array}}\qquad\quad\checkmark$

Answer:
She paid for the tape $ 9.18

3 0

4 years ago

What is the solution set for 12=2(3x - 7)^2 +4

svet-max [94.6K]

$12=2(3x-7)^2+4 \ \ \ |-4 \\
8=2(3x-7)^2 \ \ \ |\div 2 \\
4=(3x-7)^2 \\
\sqrt{4}=\sqrt{(3x-7)^2} \\
2=|3x-7| \\
3x-7=2 \ \lor \ 3x-7=-2 \\
3x=2+7 \ \lor \ 3x=-2+7 \\
3x=9 \ \lor \ 3x=5 \\
x=\frac{9}{3} \ \lor \ x=\frac{5}{3} \\
x=3 \lor \ x=1 \frac{2}{3} \\
\boxed{x \in \{1 \frac{2}{3}, 3 \} }$