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3 years ago

PLEASEEEE HELP!!! I really don’t understand math and I will Mark brainliest

Mathematics

1 answer:

lbvjy [14]3 years ago

8 0

Answer:

1.5

Step-by-step explanation:

Because the triangle are similar, they possess a proportional relationship in which the one triangle's side length is dilated by a unknown factor (y) to make its corresponding counterpart. Using this knowledge we can make the following two equations

3y=7 & xy=x+2 y is the variable representing the dilation factor

y=7/3 find the value of y

x(7/3)=x+2 substitute the value y into the equation

7/3x =x+2 solve for x

4/3x =2

(3/4)(4/3x)=2(3/4) multiply by the reciprocal

x=1.5

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According to the tables used by insurance companies, a 48-year old man has a 0.169% chance of

yarga [219]

Answer:

The expected value for the person buying the insurance is of -$48.

Step-by-step explanation:

Expected value:

0.169% = 0.00169 probability of earning the death benefit of $100,000, subtracting 217, 100000 - 217 = $99,783.

100 - 0.169 = 99.831% = 0.99831 probability of losing $217.

What is the expected value for the person buying the insurance?

$E = 0.00169*99783 - 0.99831*217 = -48$

The expected value for the person buying the insurance is of -$48.

5 0

3 years ago

Find the area of a segment formed by a chord 8" long in a circle with radius of 8"

AlekseyPX

$r=8\\\\P=\pi r^2\\\\P=\pi\cdot8^2=64\pi$

5 0

3 years ago

Noah rides his bike 175 miles a week. If he rides his bike the same number of miles for 15 weeks, how many miles will noah ride?

qwelly [4]

Multiply 175 and 15 to get 2625 miles.

3 0

4 years ago

The first and forth terms of a proportion are called the means.<br> Always<br> Sometimes<br> Never

natima [27]

Answer:

Never

Step-by-step explanation:

The first term (1st) and the fourth term (4th) of a proportion are called extreme terms or extremes, and the second term (2nd) and the third term (3rd) are called middle terms or means.
Therefore, in a proportion, product of extremes = product of middle terms.

5 0

3 years ago

A jewelry store has 311.75 ounces of 14-carat gold in stock.

WARRIOR [948]

Answer:

$\boxed{\text{(a) 86 necklaces; (b) \$2220}}$

Step-by-step explanation:

(a) Number of necklaces

3⁵/₈ = 3.625

$\text{No. of necklaces} = 311.75\text{ oz} \times \dfrac{\text{1 necklace}}{3.625\text{ oz}} = \textbf{ 86 necklaces}\\\\\text{You can make } \boxed{\textbf{86 necklaces}} \text{ from 311.75 oz of 14K gold}$

(b) Value of gold in each necklace

There are 3.625 oz of 14K gold in each necklace. Pure gold is 24K.

$\text{Mass of pure gold} = \text{3.625 oz} \times \dfrac{\text{14K}}{\text{24K}} = \text{2.1146 oz}$

Pure 24K gold is worth $1050/oz.

$\text{Value of pure gold} = \text{2.1146 oz} \times \dfrac{\text{\$1050}}{\text{1 oz}} = \textbf{\$2220}\\\\\text{The value of the gold in each necklace is } \boxed{\textbf{\$2220}}$

4 0

3 years ago