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3 years ago

Find the product and simplify. (k+ 4)(-4k – 5)

Mathematics

1 answer:

torisob [31]3 years ago

3 0

The answer is -4k^2 - 21k - 20! so sorry if I’m wrong but it’s the answer I got :>

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In ΔKLM, the measure of ∠M=90°, the measure of ∠K=78°, and KL = 35 feet. Find the length of MK to the nearest tenth of a foot.

Margaret [11]

Answer:

7.3 feet

Step-by-step explanation:

osK=

hypotenuse

adjacent

\cos 78=\frac{x}{35}

cos78=

35\cos 78=x

35cos78=x

Cross multiply.

x=7.2769\approx \mathbf{7.3}\text{ feet}

x=7.2769≈7.3 feet

Type into calculator and round to the nearest tenth of a foot.

4 0

3 years ago

Read 2 more answers

Running consumes about 720 calories per hour about how many are used if you run for 40 minutes

Agata [3.3K]

Answer:

288

Step-by-step explanation:

0.40hrs × 720 calories = 288 calories burned

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3 years ago

Which set of numbers are equivalent?

Karolina [17]

Answer:

10% = (10÷100=1÷10)=2÷20=.10

8 0

3 years ago

Draw a line representing the "rise" and a line representing the "run" of the line. State the slope of the line in simplest form.

Oduvanchick [21]

Answer:

go up 1 from 9x and left 2

Step-by-step explanation:

-1/2 is the slope of the line

up means pos

right means pos

down means neg

left means neg

5 0

3 years ago

The line CD passes through the points C (2, -1) and D (1, 1). Which of the

inn [45]

Answer:

The equation of the straight line in point - slope form

y +1 = -2 ( x-2)

Step-by-step explanation:

Step(i):-

Given points are C( 2,-1) and D(1,1)

Slope of the line

$m = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{1-(-1)}{1-2} = \frac{2}{-1} = -2$

m = -2

Step(ii):-

Equation of the straight line passing through the point ( 2,-1) and having slope

m =-2

y - y₁ = m ( x- x₁)

y - (-1) = -2 ( x-2)

y +1 = -2 ( x-2)

Final answer:-

The equation of the straight line

y +1 = -2 ( x-2)

3 0

3 years ago