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3 years ago

My number has more ones than tens my number starts with sixty

Mathematics

1 answer:

Iteru [2.4K]3 years ago

3 0

The answer could be 67, 68, or 69.

Hope that helps! c:

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A-2.5 2a-22.7 a+1.3 21.5 What’s a

rewona [7]

Answer:

2.4

Step-by-step explanation:

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3 years ago

7.5t = ? kg what is t here and also the answer of it

Nataliya [291]

Answer:

7500 kg

Step-by-step explanation:

t = tonnes

$\because \: 1 \: t = 1000 \: kg \\ \therefore \: 7.5 \: t = 7.5 \times 1000 = 7500 \: kg$

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3 years ago

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Find all constants a such that the vectors (a, 4) and (2, 5) are parallel.

Nezavi [6.7K]

Answer:

$\displaystyle a = \frac{8}{5}$ .

Step-by-step explanation:

Two vectors $(x_1,\, y_1)$ and $(x_2,\, y_2)$ are parallel to one another if and only if the ratio between their corresponding components are equal:

$\displaystyle \frac{x_1}{x_2} = \frac{y_1}{y_2}$ .

Equivalently:

$\displaystyle \frac{x_1}{y_1} = \frac{x_2}{y_2}$ .

For the two vectors in this equation to be parallel to one another:

$\displaystyle \frac{a}{4} = \frac{2}{5}$ .

Solve for $a$ :

$\displaystyle a = \frac{8}{5}$ .

$\displaystyle \frac{8}{5}$ would be the only valid value of $a$ ; no other value would satisfy the $\displaystyle \frac{x_1}{y_1} = \frac{x_2}{y_2}$ equation.

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3 years ago

A 5-kilogram bag of cement costs $18.15. What is the unit price?

Gnom [1K]

Answer:3.63

Step-by-step explanation:because if we divide 18.15 by 5 is equal 3.63.

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3 years ago

Which is factor of the polynomial x2-12x+27

sweet [91]

Answer:

(x - 9)(x - 3)

Step-by-step explanation:

Step 1: Write out quadratic

x² - 12x + 27

Step 2: Factor

What 2 numbers add up to -12 and multiply to 27?

-9 and -3 add up to -12 and multiply to 27.

(x - 9)(x - 3)

5 0

3 years ago