All categories

4 years ago

Factor 2x^2 +1x -10

Mathematics

1 answer:

garik1379 [7]4 years ago

4 0

Answer:

(2x+5)(x−2)

Step-by-step explanation:

Factor 2x2+1x−10

2x2+x−10

=(2x+5)(x−2)

You might be interested in

Can someone help me with this math question please

nikklg [1K]

Answer:

0.1

Step-by-step explanation:

4 x 10^-3 = 0.004

4 x 10^-4 = 0.0004

0.0004 ÷ 0.004 = 0.1

3 0

3 years ago

The number 6 is 30% of what number

alexandr402 [8]

6 and 3000 is the answer for ur question would be 3000

8 0

3 years ago

Help those 4 questions please and show your work please

rewona [7]

1) Temperature in Fahrenheit =77°F.

2) Temperature in Celsius= 25°C

3) Height of rectangular prism = 8 inches

4) Width of rectangle = 40 inches

Step-by-step explanation:

1) If Temperature is 25°C . How many degrees Fahrenheit is it?

The formula to calculate temperature in Fahrenheit is:

$F=(C\times\frac{9}{5})+32$

Putting value of Celsius:

$F=(C\times\frac{9}{5})+32 \\F=(25\times\frac{9}{5})+32\\F=(5\times9)+32\\F=45+32\\F=77$

So, 25°C in Fahrenheit is 77°F.

2) If temperature is 77°F,what is the temperature in Celsius?

The formula used is:

$C=(F-32)\times\frac{5}{9}$

Putting value of Fahrenheit is:

$C=(F-32)\times\frac{5}{9}\\C=(77-32)\times\frac{5}{9}\\C=45\times\frac{5}{9}\\C=25$

So, temperature in Celsius is 25°C.

3) The volume of triangular prism is 64 inches³. The length is 2 inches and width is 4 inches. What is height.

The formula of finding volume of triangular prism is:

$V=L\times W\times H$

Putting values:

$V=L\times W\times H\\64=2\times 4\times H\\64=8\times H\\H= 64/8\\H=8$

So, height of triangular prism is 8 inches.

4) The area of rectangle is 80 inches. if length is 20 inches what is the width of rectangle.

The formula used is:

$Area=Length\times Width$

Putting values:

$Area=Length\times Width\\80=20\times Width\\W=80/20\\W=40$

So, width of rectangle is 40 inches.

Keywords: Solving Word Problems

Learn more about Solving Word Problems at:

#learnwithBrainly

6 0

4 years ago

Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much o

emmainna [20.7K]

Answer:

The 95% confidence interval $81.852 < \mu < 280.098$

Step-by-step explanation:

From the question we are told that

The sample mean is $\= x = 180.975$

The standard deviation is $\sigma = 143.042$

The sample size is n = 8

Given that the confidence level is 95% then the level of significance is

$\alpha =( 100- 95) \%$

=> $\alpha =0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

=> $E = 1.96 * \frac{ 143.042 }{\sqrt{8} }$

=> $E = 99.123$

Generally 95% confidence interval is mathematically represented as

$\= x -E < \mu < \=x +E$

=> $180.975 -99.123 < p < 180.975 +99.123$

=> $81.852 < \mu < 280.098$

5 0

3 years ago

Abel was wrapping a gift for an upcoming party. He began with 20 1/2 feet of paper. He used 5 5/12 feet on his first gift and 3

FrozenT [24]

Hey there!

$20 \dfrac{1}{2} - 5 \dfrac{5}{12} - 3 \dfrac{1}{3} + 2 \times 10 \dfrac{1}{2} \\ = \dfrac{41}{2} - \dfrac{65}{12} - \dfrac{10}{3} + 21 \\ = \dfrac{246}{12} - \dfrac{65}{12} - \dfrac{40}{12} + 21 \\ = \dfrac{141}{12} + 21 \\ = 32 \dfrac{3}{4}$

Answer : 32 3/4 feet or in decimal form, 32.75 feet.

Hope this helps. - M

5 0

3 years ago

Read 2 more answers