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3 years ago

Simplify the expression 3n+–9n+–8+–7n2

Mathematics

1 answer:

Lunna [17]3 years ago

3 0

Answer: -7n^2-6n-8

Step-by-step explanation:

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Solve the following inequality algebraically. ∣x+7∣≤8

AlekseyPX

Answer:

x ≤ 1 and x ≥ −15

Step-by-step explanation:

Solving Absolute Value

We know that x + 7 ≤ 8 or x + 7 ≥ -8

Condition 1:

Step 1: Subtract 7 from both sides.

$x + 7 - 7\leq 8 - 7$
$x\leq 1$

Condition 2:

Step 1: Subtract 7 from both sides.

$x + 7 - 7\geq -8 - 7$
$x\geq -15$

Therefore, the answer is x ≤ 1 and x ≥ -15.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

4 0

3 years ago

In triangle ABC mzA -45, mzB = 40", and a = 7. Which equation should you solve to find b?

yaroslaw [1]

Answer:

Option A. $\frac{sin(45\°)}{7}=\frac{sin(40\°)}{b}$

Step-by-step explanation:

we know that

Applying the law of sines in the triangle ABC

$\frac{sin(A)}{a}=\frac{sin(B)}{b}$

substitute the given values

$\frac{sin(45\°)}{7}=\frac{sin(40\°)}{b}$

$b=\frac{7}{sin(45\°)}sin(40\°)\\\\b=6.4\ units$

6 0

3 years ago

Don't know this please

Lera25 [3.4K]

I just learn this but I forgot

7 0

3 years ago

A shoe store recorded the price (in dollars) of 175 pairs of women's shoes and 175 pairs of men's shoes. The data collected was

arsen [322]

Answer:

Most of the men's shoes in the data set cost more than women's shoes.

Step-by-step explanation:

From what I could tell it can't be The price of men's shoes has a higher interquartile range than that of women's shoes. becuse that's false what looks to fit is Most of the men's shoes in the data set cost more than women's shoes. since on the graph more of the mens vaules are bigger

5 0

3 years ago

Solve for x 5/ 6X equals 10 / 3

zimovet [89]

Answer:

$\large\boxed{x=\dfrac{1}{2}=0.5}$

Step-by-step explanation:

$\dfrac{5}{6x}=\dfrac{10}{3}\qquad\text{cross multiply}\\\\(6x)(10)=(5)(6)\\\\60x=30\qquad\text{divide both sides by 60}\\\\x=\dfrac{30}{60}\\\\x=\dfrac{1}{2}$

4 0

3 years ago