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3 years ago

I need help with this problem x²﹣9x﹣15=﹣5

Mathematics

2 answers:

icang [17]3 years ago

7 0

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

x=10,−1

ycow [4]3 years ago

7 0

Answer:

-10,3 By the picture you gave us.

Step-by-step explanation:

See the steps below:)

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What number makes the expressions equivalent? Enter your answer in the box. 1/2(–1.4m + 0.4) =__m + 0.2A) -1.4B) 1.4C) -0.7D) 0.

Snowcat [4.5K]

Answer:

C. -0.7

Explanation:

Given the equation:

$\frac{1}{2}(-1.4m+0.4)=\boxed{\square}_{}m+0.2$

First, distribute the bracket on the left-hand side:

$\begin{gathered} \frac{1}{2}(-1.4m)+\frac{1}{2}(0.4) \\ =-0.7m+0.2 \end{gathered}$

The number that makes the given expressions equivalent is -0.7.

The correct choice is C.

6 0

1 year ago

Addie walked 2 1/2 miles in 45 minutes. Suzie covered 2 2/5 miles in 2/3 of an hour.

N76 [4]

Answer:

Suzie's speed was 3.6 mph

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

s ----> the speed in mph (miles per hour)

x ----> the distance in miles

y ----> the time in hours

$s=\frac{x}{y}$

Find Suzie's speed

we have

$x=2\frac{2}{5}\ mi$

$y=\frac{2}{3}\ h$

substitute

$s=2\frac{2}{5}:\frac{2}{3}$

Convert mixed number to an improper fraction

$2\frac{2}{5}=2+\frac{2}{5}=\frac{2*5+2}{5}=\frac{12}{5}$

substitute

$s=\frac{12}{5}:\frac{2}{3}=\frac{36}{10}=3.6\ mph$

3 0

2 years ago

What is 6 divided by 1/5 <br> 1/5 as a FRACTION

Gala2k [10]

Flip the second number (reciprocal)

1/5 becomes 5

6 x 5 = 30

30 is your answer

hope this helps

5 0

3 years ago

Read 2 more answers

Find the remainder when f(x)= 8x^3+ 4x^2<br> 13x + 3 is divided by 2x + 5.

Scrat [10]

Answer:

-129

Step-by-step explanation:

2x+5=0

x=-5/2 [By the remainder theorem]

f(-5/2)=8(-5/2)^3+4(-5/2)^2+13(-5/2)+3

=-125+25-65/2+3

=-129.

5 0

3 years ago

PLease HeLp MeEeEeEeEeEeEeE

ale4655 [162]

Shiii like ion know

4 0

3 years ago

Read 2 more answers