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2 years ago

Which expression has the same value as -18÷(-9)

Mathematics

2 answers:

erma4kov [3.2K]2 years ago

6 0

Negative dividing by negative gives positive,
so 18:9=2

daser333 [38]2 years ago

4 0

Answer:

2 is the value... so now solve the other equations to find out which ones also equal 2 and then you have your answer(s).

Step-by-step explanation:

Its 2 because your dividing 2 negative numbers, which will always become a positive.

------------------------

-18/-9=2 ( the value)

(next equation) = ( answer)

*Repeat and the ones that have the answer of 2 is correct*

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2 years ago

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Please help<br><br>numbers 42, 43, 44

Aleks [24]

<h3>Answer:</h3>

42. 29°

43. 3x³ +2x² -3x +10

44. 20a² +68a

<h3>Step-by-step explanation:</h3>

42. The right-angle corner tells you the two marked angles are complementary — they sum to 90°.

(-3x +20)° + (-2x +55)° = 90°

-5x +75 = 90 . . . . . . . . . . collect terms, divide by °

-5x = 15 . . . . . . . . . . . . . . . subtract 75

x = -3 . . . . . divide by the coefficient of x

The angle of interest is (-3x+20)°. Filling in the found value for x, we have ...

(-3·(-3) +20)° = 29° = m∠BDC

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43. The distributive property is useful for multiplying polynomials.

(x +2)(3x² -4x +5) = x(3x² -4x +5) +2(3x² -4x +5)

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= 3x³ +2x² -3x +10

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44. Area is the product of length and width, so this becomes a problem in multiplying polynomials.

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2 years ago

En una cancha se va a pintar la circunferencia central que tiene un diámetro de 5 m .¿cual es la longitud de la circunferencia?

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Answer:

The length of the circumference is $5\pi\ m$ or $15.70\ m$

Step-by-step explanation:

<u><em>The question in English is</em></u>

On a court, the central circumference will be painted, which has a diameter of 5 m. What is the length of the circumference?

we know that

The circumference of a circle is given by the formula

$C=\pi D$

we have

$D=5\ m$

substitute

$C=\pi (5)\\C=5\pi\ m$

This is the exact value

assume

$\pi=3.24$

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2 years ago

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lord [1]

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2 years ago

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Stolb23 [73]

Answer:

The probability is approximately 0.0699. That's $\displaystyle \frac{10}{143}$ to be exact.

Step-by-step explanation:

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