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4 years ago

-3b^2+3b+90 how to factor

1 answer:

4 0

Factor the following:
-3 b^2 + 3 b + 90
Factor -3 out of -3 b^2 + 3 b + 90:
-3 (b^2 - b - 30)
The factors of -30 that sum to -1 are 5 and -6. So, b^2 - b - 30 = (b + 5) (b - 6):
Answer: -3(b + 5) (b - 6)

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Write the equation of the line in slope intercept form slope =-9 through (-5,5)

Furkat [3]

Answer:

y = 9x - 40

Step-by-step explanation:

Using the point-slope equation of a straight line is the fastest approach here, since we already have the slope and a point:

y - k = m(x - h) becomes y - 5 = -9(x + 5)

Solving for y, this becomes y = 9x + 5 - 45, or y = 9x - 40

4 0

4 years ago

How much longer is 3 meters than 3 yards?

mojhsa [17]

3 meters is 9.84252 feet, and 3 yards is 9 feet
So 3 meters is .84252 feet more that 3 yards.

5 0

3 years ago

On a map, each centimeter represents 50 m.

PSYCHO15rus [73]

Tameka's claim is incorrect, because the actual area of the park is 15000 square meters.

The scale measurement of the area of the park is given as:

$1cm : 50m$

Square both sides of the ratio

$(1cm)^2 : (50m)^2$

$1cm^2 : 2500m^2$

Multiply both sides of the ratio by 6

$6 \times 1cm^2 : 6 \times 2500m^2$

Evaluate both factors

$6cm^2 : 15000m^2$

The above means that the actual area of the park is 15000 square meters.

Hence, Tameka's claim is incorrect

Read more about scale drawings at:

brainly.com/question/9011465

8 0

2 years ago

<img src="https://tex.z-dn.net/?f=%20%28%7B3x%7D%5E%7B2%7D%20%20%2B%202x%20%2B%201%29%20%2B%20%28%20%7B2x%7D%5E%7B2%7D%20%20-%20

mafiozo [28]

Answer:

$5x^2+x-5$

Step-by-step explanation:

$(3x^2+2x+1)+(2x^2-4x-5)+(3x-1)= \\\\(3x^2+2x^2)+(2x-4x+3x)+(1-5-1)= \\\\5x^2+x-5$

Hope this helps!

4 0

3 years ago

Jeff hikes 1/2 mile every 15 minutes, or 1/4 hour. Lisa hikes 1/3 mile every 10 minutes, or 1/6 hour. How far do they each hike

inessss [21]

Answer:

they each hike 2 miles

Step-by-step explanation:

Jeff: 15=1/2

*4 *4

60 min=2 miles

Lisa: 10=1/3

*6 *6

60 = 2

6 0

4 years ago