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3 years ago

5

Write an equation, in slope-intercept form, of the line that passes through the given point and satisfies the given condition. (

-1, -4); perpendicular to y=2x+5

1 answer:

malfutka [58]3 years ago

8 0

Answer:

y = -1/2x - 9/2

Step-by-step explanation:

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In △ABC, m∠A=19°, a=13, and b=14. Find c to the nearest tenth.

34kurt

We know that
Applying the law of sines

step 1
Find the value of angle B
a=13
b=14
A=19°
so

$\frac{a}{sin A} = \frac{b}{sin B} \\ a*sin B=b*sin A \\ sin B= \frac{b}{a}*sin A \\ sin B= \frac{14}{13} *sin 19 \\ sin B=0.3506 \\ B=arc sin(0.3506) \\ B=20.5$ °

step 2
with angle A and angle B find the angle C
A+B+C=180-----> solve for C
C=180-(A+B)------> C=180-(19+20.5)-----> C=140.5°

step 3
$\frac{a}{sin A} = \frac{c}{sin C} \\ a*sin C=c*sin A \\ c=a* \frac{sin C}{sin A} \\ c=13* \frac{sin 140.5}{sin 19} \\ c=25.4$

the answer is
the value of c is 25.4

3 0

3 years ago

When is factoring by grouping easier to use. How many terms must you have to have ?

Karo-lina-s [1.5K]

You must have 4 terms for factoring by grouping to be easier to use.

For example...
x^2 + 10x + 2x + 20
(x^2 + 10x) + (2x + 20)
x(x+10) + 2(x+10)
(x+2)(x+10)

The first line, the expression x^2+10x+2x+20, has four terms.

Note: Just because you have four terms doesn't automatically guarantee you can factor

3 0

3 years ago

10 POINTS I WILL GIVE BRAINLIEST

natima [27]

Answer:

arithmetic sequence

A sequence with the difference between two consecutive terms constant. The difference is called the common difference.

Step-by-step explanation:

8 0

3 years ago

Simplify 3 sqrt 5x * 3 sqrt 25x^ 2 completely.

tia_tia [17]

Answer:

=45x√5x

Step-by-step explanation:

The provided expression is: 3√5x×3√25x²

We can simplify 3√25x² because √25x²=5x

3×5x=15x

Combine with the rest of the expression through multiplication.

3√5x×15x

=45x√5x

The expression 3√5x×3√25x² is equivalent to 45x√5x.

The expected simplified answer is 45x√5x

8 1

3 years ago

Read 2 more answers

3) m_2 = x + 70<br>60°<br>A) -10<br>C) 11<br>B)-6<br>D) 9

kogti [31]

Answer:

C

Step-by-step explanation:

7 0

3 years ago