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2 years ago

What is the value of x in the equation 0.7 x minus 1.4 equals -3.5

Mathematics

2 answers:

mojhsa [17]2 years ago

5 0

The value of x is -3
X=-3

Isolate the variable by dividing each side by factors that don't contain the variable.

Doss [256]2 years ago

3 0

Answer:

-3

Step-by-step explanation:

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The state medical school has discovered a new test for tuberculosis. (If the test indicates a person has tuberculosis, the

Inessa [10]

The probability according to the given scenario is:

(a) 0.0395

(b) 0.95

(c) 0.076

The given values are:

$P(B/A) = 0.79$
$P(A) = 0.05$

(a)

The probability that the b/w has tuberculosis as well as having (+) test will be:

→ $P(A \cap B) = P(B/A).P(A)$

By substituting the values, we get

→ $= 0.79\times 0.05$

→ $= 0.0395$

(b)

The probability that a person does not have tuberculosis will be:

→ $P(A') = 1-P(A)$

→ $=1-0.05$

→ $= 0.95$

(c)

The person does not have tuberculosis as well as have a (+) test, the probability will be:

→ $P(A' \cap B) = P(A').P(B/A')$

→ $= 0.95\times 0.08$

→ $= 0.076$

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8 0

2 years ago

The top of a rectangular table has an area of 11 square feet. It has a length that is 3.5 feet more than the width. Find the dim

pashok25 [27]

Step-by-step explanation:

If we let the width be w, then the length is w+3.5.

This means that w(w+3.5)=11

w^2 + 3.5w - 11 = 0

2w^2 + 7w - 22 = 0 (multiply both sides by 2)

(2w+11)(w-2)=0

w = -11/2 or w = 2 (disregard w = -11/2 as distance is positive)

This means that w=2, and thus the length is 2+3.5=5.5

3 0

2 years ago

Many years ago, the towns of Franklin and Chester agreed to begin posting their populations on signs just outside of their towns

iVinArrow [24]

Answer:

The answer is 9

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Find the distance between the points (-4, -5 and (3, -1.

Komok [63]

≡ We know that:
⇔ $(x_{1},y_{1})$ → $(-4,-5)$
⇔ $(x_{2},y_{2})$ → $(3,-1)$

≡ Solution:
⇒ $\sqrt{[(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}]}$
⇒ $\sqrt{[(3-(-4))^{2}+(-1-(-5))^{2}]}$
⇒ $\sqrt{[7^{2}+4^{2}]}$
⇒ $\sqrt{[49+16]}$
⇒ $\boxed{\sqrt{65}}$

7 0

3 years ago

Read 2 more answers

Please give me the correct answer and please explain how you found the answer

lidiya [134]

Answer:

x=48

Step-by-step explanation:

to get x alone, you have to multiply both sides by 2, and 24 times 2 is 48

plz brainliest :)

8 0

3 years ago

What is the value of x in the equation 0.7 x minus 1.4 equals -3.5 ​

What is the value of x in the equation 0.7 x minus 1.4 equals -3.5