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3 years ago

Which expression is equivalent to -5(m - 3)? -5(-3 + m) 15m - 5 -5(-3m) -3(m - 5)

Mathematics

1 answer:

Zepler [3.9K]3 years ago

6 0

Answer:

the first one

Step-by-step explanation:

The first equation is -5m+15

and the first one is 15-5m

Which is basically the same thing.

Glad to help

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The diagonals of a square measure 20. what is the length of a side of the square

cupoosta [38]

Answer:

sin45×20

Step-by-step explanation:

Remember sin of an angle is the opposite side divided by the hypothenuse. Or the hyp isb20 so the oppside will be sin45 times the hyp

4 0

2 years ago

The area covered by a topic lie plant triples every year. By what factors does the are covered by the plant increase every month

Marina CMI [18]

Answer:

16.67%

Step-by-step explanation:

If area triples every year :

This means that :

With an initial area of 10;

Area at the end of the year = 3 * 10 = 30

Percentage increase per year :

(30 - 10) / 10 * 100%

(20 / 10) * 100%

2 * 100%

= 200% per year

Therefore, monthly increase %

Yearly % increase ÷ number of months in a year

200% ÷ 12

= 16.666666%

= 16.67%

6 0

3 years ago

Need help please I would really appreciate it

Nataly_w [17]

Answer:

The slope of line is 9

Step-by-step explanation:

We can use two pairs of input-output from the table to find the slope of the given line. Here x is input and y is output.

Slope is defined as the steepness of a line and is given by the formula:

$m = \frac{y_2-y_1}{x_2-x_1}$

Selected pairs from table are:

(-1,-18) and (0,-9)

Here

$x_1 = -1\\x_2 = 0\\y_1 = -18\\y_2 = -9$

Putting the values in the formula

$m = \frac{-9-(-18)}{0-(-1)}\\=\frac{-9+18}{0+1}\\= 9$

Hence,

The slope of line is 9

6 0

3 years ago

Use the Distributive Property to expand this expression.<br><br> z(–6.4 – 3.5x)

dedylja [7]

Answer:

$z\left(-6.4\:-3.5x\right)=-6.4z-3.5zx$

Hence, Option 'C' is true.

Step-by-step explanation:

Given the expression

$z\left(-6.4\:-3.5x\right)$

Apply distributive law: $a\left(b-c\right)=ab-ac$

Here: $a=z,\:b=-6.4,\:c=3.5x$

so the expression becomes

$z\left(-6.4\:-3.5x\right)=z\left(-6.4\right)-z\cdot \:\:3.5x$

$=-6.4z-3.5zx$ ∵ $+\left(-a\right)=-a$

Therefore,

$z\left(-6.4\:-3.5x\right)=-6.4z-3.5zx$

Hence, option 'C' is true.

3 0

3 years ago

Which literal equations are equivalent to p = mv?

anygoal [31]

B and D because it doesnt matter how you write the equation you still get the same answer,

don't forget to rate my answer 5 stars and thank me

7 0

3 years ago