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Marta_Voda [28]
3 years ago
9

What is ( - 7 ) times ( - 3 )

Mathematics
2 answers:
PtichkaEL [24]3 years ago
6 0
The answer is 21 because the negatives cancel out
tankabanditka [31]3 years ago
3 0

(-7) times (-3) is 21


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What is 1/3 rounded to
slavikrds [6]
The real amount is 3.333333333333333333333... so you can round it to 0.3
6 0
3 years ago
Solve for x: two thirds plus one third times x equals two times x
Salsk061 [2.6K]

Answer:  x = 2/5 in fraction form

In decimal form, the answer is x = 0.4

====================================================

Work Shown:

2/3 = two thirds

2/3 + (1/3)x = 2x  is the equation you're given

Multiply every term by 3 so that we clear out the fractions

3*(2/3) + 3*(1/3)x = 3*2x

2 + x = 6x

From here, we solve for x

2 + x = 6x

2+x-x = 6x-x .... subtract x from both sides

2 = 5x

5x = 2

5x/5 = 2/5 ... divide both sides by 5

x = 2/5

x = 0.4

7 0
3 years ago
If x+1/x=5 then find the value of (x^2+1/x^2) is?
Degger [83]

Recall that

(a+b)^2=a^2+2ab+b^2

So we have

\left(x+\dfrac1x\right)^2=x^2+2+\dfrac1{x^2}

Given that x+\frac1x=5, we get

x^2+\dfrac1{x^2}=5^2-2=\boxed{23}

3 0
3 years ago
What is x on this right triangle? Round to the nearest tenth.
Naya [18.7K]

Answer:

= 109.5 to the nearest tenth.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
16 m, 21 m, 39 m in geometry tryna find out how to measure the side length that could form a triangle
Lera25 [3.4K]

Step-by-step explanation:

The given measurements are:

16 m, 21 m, 39 m

We know that, it is only possible to form a triangle if sum of the measures of any two lengths is always grater than the measure of third length.

\therefore \: 39 + 21 = 60 > 16 \\  \\  \:  \:  \:  \:  \:  \: 16 + 39 = 55 > 21 \\  \\  \:  \:  \:  \:  \:  \: 16 + 21 = 37   \ngtr39 \\  \\  \because \: last  \: mathematical\: statement \: is  \:\\ defying \: the \: above \: law \\

Therefore, it is not possible to form a triangle with given measurements.

8 0
3 years ago
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