All categories

3 years ago

Which expression is equivalent to -5(8x+9) -7x?

Mathematics

2 answers:

Irina-Kira [14]3 years ago

8 0

Answer:

Step-by-step explanation:

-5(8x+9)-7x

-40x-45-7x

-47x-45

grandymaker [24]3 years ago

5 0

C.

Hope this helps

Brainliest plzzzz

You might be interested in

❶ Find the values of x, y and z in each of the case given below ⟼

Ket [755]

Answer:

y = 45° (converse of alternate interior angle theorem)

z = 45° (alternate interior angle theorem)

k = 135° (exterior angle theorem)

Cos θ + Sin θ = √2 Cos θ

(Cos θ + Sin θ)² = (√2 Cos θ)²

(Exponential property of equality)

Cos² θ + Sin² θ + 2 (Cos θ • Sin θ) = (√2 Cos θ)²

(Distributive property)

1 + 2(Cos θ • Sin θ) = (√2 Cos θ)²

(Definition of the pythagorean identity).

This identity is true because, if a² + b² = c². The triangle must be a right triangle, and a right triangle always has a 90° angle tangent to the triangle, and the tangent of 90° is 1, cos applied to the adjacent over hypotenuse, and sin applies to the opposite over hypotenuse, so this identity must work).

1 + 2(Cos θ • Sin θ) = 2 Cos² θ

(definition of an exponent)

1 + 2(Cos θ • Sin θ) – 1 = 2 Cos² θ – 1

(subtraction property of equality)

2(Cos θ • Sin θ) = 2 Cos² θ – 1

2(Sin θ • Cos θ) = 2 Cos² θ – 1

(Associative property of multiplication ; the input for both functions are θ so this rule works, this is an exception)

Sin (2x) = 2 Cos² θ – 1

(double angled identity of 2 sine and cos)

5 0

3 years ago

Lilly’s car uses 5 gallons of gas to drive 230 miles. At what rate does her car use gas in gallons per mile?

andrezito [222]

Answer:

0.02 gallons per mile, and 46 miles per gallon.

Step-by-step explanation:

7 0

3 years ago

Solve the following equation for b be sure to take into account whether a letter is capitalized or not f = ad

Rudiy27

Answer:

Step-by-step explanation:

3 0

3 years ago

Dilating a triangle changes the shape of the triangle but does not change its size. A. True B. False

Lorico [155]

False, dilation changes the base and height of the triangle, forcing the area to change as well.

5 0

3 years ago

Read 2 more answers

Scores on the Gillian Autism Rating Scale (GARS) are normally distributed with a mean of 100 (µ =100) and a standard deviation o

skelet666 [1.2K]

Answer:

The answer is below

Step-by-step explanation:

a) Given that the number of sample (n) = 64, therefore the since n > 30, the distribution of the sample means is going to be normally distributed.

b) The mean of the distribution of sample means (also known as the Expected value of M) is equal to the population mean μ.

$\mu_x$ = μ = 100

c) The standard deviation of the distribution of sample means is called the Standard Error of M, it is given by:

$\sigma_x=\frac{\sigma}{\sqrt{n} } =\frac{15}{\sqrt{64} } =1.875$

6 0

3 years ago