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3 years ago

What is the answer to the question

Mathematics

1 answer:

-BARSIC- [3]3 years ago

5 0

Answer:

From top to bottom:

Step-by-step explanation:

You just simply add the number in the top row and the number in the column together.

2 + 1 = 3

4 + 3 = 7

2 + 4 = 6

6 + 6 = 12

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#12 please help me solve this

Sidana [21]

Answer:

S = 350+70W

S =1470

Step-by-step explanation:

He starts with 350, that is the initial amount

Each week he adds 70, that means it gets multiplied by the number of weeks,W

The total amount S = the initial amount plus the weekly addition times the number of weeks

S = 350+70W

Let W =16

S = 350+70*16

S = 350+1120

S =1470

7 0

3 years ago

Read 2 more answers

In the video, the water level was 15 milliliters before adding the chain, and 20 milliliters after adding the chain. When I weig

mr_godi [17]

Answer:

39.7%

Explanation:

1. First find the density of your chain

Density = mass / volume

Volume = displaced water volume

= Volume of Final level of water - initial level of water

= 20 ml - 15 ml = 5 ml

Mass = 66.7 g

Density = 66.7g / 5 ml = 13.34 g/ml

2. Second, write the denisty of the chain as the weighted average of the densities of the other metals:

Mass of gold × density of gold + mass of other metals × density of other metals, all divided by the mass of the chain.

Calling x the amount of gold, then the amount of other metals is 66.7 - x:

$\dfrac{19.3\cdot x+9.7\cdot (66.7-x)}{66.7}=13.34$

$19.3x+635.66-9.7x=889.778$

$9.6x=254.118\\\\x=26.47$

Then, there are 26.47 grams of gold in 66.7 grams of chain, which yields a percentage of:

(26.47 / 66.7) × 100 = 39.7%

7 0

3 years ago

How much water should be added to 8 quarts of 90% antifreeze to get a 30% solution?

Serjik [45]

Answer:

16 quarts

Step-by-step explanation:

Let's say x is the volume of water.

Initially, the amount of antifreeze is the concentration times the volume: 0.90 (8).

After the water is added, the amount of antifreeze is the new concentration times the new volume: 0.30 (8 + x).

Since the amount of antifreeze doesn't change, we can set these equal and solve for x.

0.90 (8) = 0.30 (8 + x)

7.2 = 2.4 + 0.30 x

4.8 = 0.30 x

x = 16

16 quarts of water should be added.

7 0

3 years ago

Justin has three goldfish and one turtle. Write a fraction to represent the part of his pets that are goldfish.

Troyanec [42]

Answer:

3/4

Step-by-step explanation:

3 goldfish

4 total pets

7 0

4 years ago

Read 2 more answers

Your gross income is $4,520.00/month. Your deductions are FICA (7.65%), federal tax withholding (11.75%), and state tax withhold

Lina20 [59]

Gross income: $4,520.00/ mo

FICA deduction: $345.78 (4,520 x .0765)

FTW deduction: $531.1 (4,520 x .1175)

STW Deduction: $348.2 (4,520 x .085)

REALIZED INCOME: $3,258.92

Fixed income: $977.76 ( $3,258.92 x .3)

5 months fixed income: $4,888.38

CD savings Account balance: $3,666.28 ( $4,888.38 x .75)

Regular savings account balance: $1,222.1 ($4,888.38 - $3,666.28)

Formula: $ x APR% x time

Everything must be in decimal form. For this case we are looking at 60/365 days of the year, which the last parenthesis represent.

CD = ( $3,666.28)(.0525)(.164384) = $31.64

RSA = ( $1222.1)(.038)(.164384) = $7.63

8 0

3 years ago