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goblinko [34]
4 years ago
6

How to find the value of x

Mathematics
1 answer:
stealth61 [152]4 years ago
5 0

Answer:

×=1

Multiply both sides of the equation by 12, the least common multiple of 4,3.

3x+4(x−1)=3

Use the distributive property to multiply 4 by x−1.

3x+4x−4=3

Combine 3x and 4x to get 7x.

7x−4=3

Add 4 to both sides.

7x=3+4

Add 3 and 4 to get 7.

7x=7

Divide both sides by 7.

x=

7

7

Divide 7 by 7 to get 1.

x=1

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IRINA_888 [86]

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y = -2.4

Step-by-step explanation:

y = 1.8 - 4.2 = -2.4

6 0
3 years ago
In right triangle RST, if cos R = 0.6, what is the length of RT?
svet-max [94.6K]

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1) In right triangle ABC with <A = 90, the ratio for sinB= 5/13. 2) Given ... a) sin (40) = 32/CA b) Cos(50) = 32/ CA ... In triangle RST, angle R is a right angle. If TR = 6 . and ... Determine the length of AC to the nearest 10th.

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3 years ago
Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=10
Tju [1.3M]

Answer: 0.8238

Step-by-step explanation:

Given : Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with \mu=106 and \sigma=15.

Let x denotes the scores on a certain intelligence test for children between ages 13 and 15 years.

Then, the proportion of children aged 13 to 15 years old have scores on this test above 92 will be :-

P(x>92)=1-P(x\leq92)\\\\=1-P(\dfrac{x-\mu}{\sigma}\leq\dfrac{92-106}{15})\\\\=1-P(z\leq })\\\\=1-P(z\leq-0.93)=1-(1-P(z\leq0.93))\ \ [\because\ P(Z\leq -z)=1-P(Z\leq z)]\\\\=P(z\leq0.93)=0.8238\ \ [\text{By using z-value table.}]

Hence, the proportion of children aged 13 to 15 years old have scores on this test above 92 = 0.8238

4 0
3 years ago
A $4000 deposit in an account after 1 year with an APR of 3.6. How much is the balance after 1 year?
BaLLatris [955]
Hi!
Let's divide 4000 by 1000 to see what .1% would be: $4.
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Add 4000 and 144 together:40144.
hope this helps!
5 0
4 years ago
.....................
Norma-Jean [14]

Answer:

3) 5 centimeters

Step-by-step explanation:

Plug 3 and 4 into the formula for the Pythagorean Theorem. You get 5.

6 0
3 years ago
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