2 years ago

Help me dawg. I need this

Mathematics

1 answer:

prohojiy [21]2 years ago

8 0

The answer is Choice (A)

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3 (x+6) what is the answer ??

ziro4ka [17]

Answer:

3x+18

Step-by-step explanation:

3 (x+6)

Distribute

3x+3*6

3x+18

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3 years ago

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What’s 4.50 converted into scientific notation?

zlopas [31]

Answer:

4.50 in scientific notation

4.5 × 100

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3 years ago

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A 20-gallon salt-water solution contains 15% pure salt. How much pure water should be added to it to produce a 10% solution?

Elanso [62]

15% of 20 gal = 0.15 * 20 gal = 3 gal, so the solution contains 3 gal of salt.

If we add x gal of water to the solution, we end up with (20 + x) gal of solution. We want the new mixture to have a concentration of 10%, or

10% of (20 + x) gal = 0.1 * (20 + x) gal = 2 + 0.1x gal

of salt.

The amount of salt in the tank hasn't changed. Solve for x :

2 + 0.1x = 3

0.1x = 1

x = 10 gal

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3 years ago

Ciara has a bag of 60 colored marbles. There are purple, green, and red marbles,. She empties the bag, sorts the marbles, and co

IRISSAK [1]

Answer:

$Red = 29$

Step-by-step explanation:

Given

$Total = 60$

$Purple = 11$

$Green = 20$

Required

Number of red marbles, without counting

To do this, we simply subtract the sum of the purple and red marbled from the total marbles.

So, we have:

$Red = Total - (Purple + Green)$

$Red = 60 - (11 + 20)$

$Red = 60 - 31$

$Red = 29$

4 0

3 years ago

Lexi is making a scale drawing of a soccer field that is 120 yards long and 80 yards wide and the field is that see strong is 30

vekshin1

Answer:

45 cm

Step-by-step explanation:

l = Length of football field is 120 yards

w = Width of football field is 80 yards

The ratio of the sides is $\dfrac{l}{w}=\dfrac{120}{80}=\dfrac{3}{2}$

Now the width of the field is 30 cm = w'

$\dfrac{l'}{w'}=\dfrac{l}{w}\\\Rightarrow l'=\dfrac{l}{w}\times w'\\\Rightarrow l'=\dfrac{3}{2}\times 30\\\Rightarrow l'=45\ \text{cm}$

The length of the field in the drawing is 45 cm.

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3 years ago