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2 years ago

6. how is twice a number decrease by three is negative seven written as a question A. 2+×_3=7 B. 2×_3=7 C. ×2-3=7 D. (×-3)2=-7

Mathematics

1 answer:

bonufazy [111]2 years ago

8 0

Answer:

Step-by-step explanation:

6. how is twice a number decrease by three is negative seven written as a question A. 2+×_3=7 B. 2×_3=7 C. ×2-3=7 D. (×-3)2=-7

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How do you get the square root of 100000

finlep [7]

The square root would be 316

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3 years ago

the function f is defined by f(x)=150/x-z where z is a constant. find z if the value of f at x=1/5 is equal to 250

malfutka [58]

Answer:

x = -1 $\frac{1}{20}$

Step-by-step explanation:

f( $\frac{1}{5}$ ) = 120, therefore we can create this equation:

120 = 150 ÷ ( $\frac{1}{5}$ - z)

cross-multiply to get: 24 - 120z = 150

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z = -1 $\frac{3}{60}$

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2 years ago

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Which of the following theorems verifies that ABC~WXY?

Bumek [7]

Answer:

The correct answer is option B. AA

Step-by-step explanation:

Given two triangle:

$\triangle ABC$ and $\triangle WXY$ .

The dimensions given in $\triangle ABC$ are:

$\angle A = 27^\circ\\\angle B = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle A+\angle B+\angle C = 180^\circ\\\Rightarrow 27+90+\angle C=180^\circ\\\Rightarrow \angle C = 63^\circ$

The dimensions given in $\triangle WXY$ are:

$\angle Y = 63^\circ\\\angle X = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle W+\angle X+\angle Y = 180^\circ\\\Rightarrow \angle W+90+63=180^\circ\\\Rightarrow \angle W = 27^\circ$

Now, if we compare the angles of the two triangles:

$\angle A = \angle W = 27^\circ\\\angle B = \angle X= 90^\circ\\\angle C = \angle Y= 63^\circ$

So, by AA postulate (i.e. Angle - Angle) postulate, the two triangles are similar.

$\triangle ABC \sim \triangle WXY$ by AA theorem.

So, correct answer is option B. AA

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2 years ago

5 1/6 + -3 5/6 = ????

Serggg [28]

Answer:

1 1/3

Step-by-step explanation:

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2 years ago

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Tiana's math test score are 85 and 91 . She has one more test left. In order to earn and A, her average test score must be at le

Zanzabum

85 + 91 + x ÷3 ≥94

You didn't give any choices but this represents the problem.

3 0

2 years ago

6. how is twice a number decrease by three is negative seven written as a question A. 2+×_3=7 B. 2×_3=7 C. ×2-3=7 D. (×-3)2=-7​

6. how is twice a number decrease by three is negative seven written as a question A. 2+×_3=7 B. 2×_3=7 C. ×2-3=7 D. (×-3)2=-7