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3 years ago

Please answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!

Mathematics

1 answer:

tia_tia [17]3 years ago

7 0

Answer:

x = 8

Step-by-step explanation:

well using the theorem we have

$\frac{6}{9}=\frac{x}{12}\\\\\frac{2}{3}=\frac{x}{12}\\\\12[\frac{2}{3}]=12[\frac{x}{12}]\\\\4\cdot 2=x\\\\x=8$

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A submarine was hovering 500 ft below the surface of the ocean. It rose 125 feet and then descended 225 feet to avoid detection

Vilka [71]

Answer:

600 feet deep

Step-by-step explanation:

The submarine was at 500 feet then it went 125 feet up so 500-125=375 then you take that and add 225 feet so 375+225=600

6 0

3 years ago

Please help with math 30 points

AlladinOne [14]

Y=|x+7|-9

Im not sure how to explain this sorry

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3 years ago

Solve: 3x(x + 4) + 3(x + 4) = 0 A) 0 and -4 B) -1 and 4 C) -1 and -4 Eliminate D) 1 and 4

stiv31 [10]

Answer:

The answer is C) -1 and -4

Step-by-step explanation:

Sorry i don't have the step by step explanation but that's the answer

4 0

3 years ago

Aimee and Ben are purchasing a condominium and are financing $160,000. The mortgage is a 20 year 3/1 ARM with a cap structure of

yarga [219]

Answer:

$1169.45

Step-by-step explanation:

Using the formula:

$P = L \Big( \dfrac{c(1+c)^n}{(1+c^n) -1} \Big)$

where;

Loan amount L = 160000

number of months (n) = 20 × 12 = 240

Lets assume that the interest rate per month c = 6.25% since it is not given.

i.e. (6.25/( 100*12) ) = 5.208 × 10⁻³

∴

$P = 160000 * \dfrac{5.208 *10^{-3} (1+5.208 *10^{-3})^{240}}{(1+5.208 *10^{-3})^{240}-1}$

P = $1169.45

6 0

3 years ago

Previous studies have reported that elite athletes are often deficient in their nutritional intake (for example, total calories,

Naddik [55]

Answer:

(3138.29, 3705.11)

Step-by-step explanation:

Given that for sample size of n = 50 male athletes from eight Canadian sport centers surveyed, the average caloric intake was 3077.0 kilocalories/day with a sample standard deviation of 987.0.

The recommended amount = 3421.70

To construct 95% confidence interval

Since population std deviation is not known we use t critical value for degree of freedom 50-1 =49

t critical = 2.010

Hence margin of error = $2.010*\frac{987}{\sqrt{50-1} } \\=283.41$

Confidence interval lower bound = $3421.70-283.41\\=3138.29$

Confidence interval upper bound = $3421.70+283.41\\=3705.11$

Conf interval = $(3138.29, 3705.11)$

7 0

4 years ago