1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergio [31]
3 years ago
9

Plzzzzz help me with this math plzzzz

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
7 0

Answer:

<em>C) -1(x+8)(x+7)</em>

Step-by-step explanation:

-x^{2} -15x-56\\-1(x^{2} +15x+56)\\-1(x+8)(x+7)

-1 factors through the entire equation.

8+ 7 = 15 and 8 x 7 = 56 (so 8 and 7 are our factors.)

lapo4ka [179]3 years ago
6 0

Answer:

c i know just took it

Step-by-step explanation:

You might be interested in
How does 24/40 compare to 5/10
saw5 [17]

If you simplify 24/40:

divide by 4

6/10

divide by 2

3/5

simplify 5/10:

divide by 2

1/5

therefore, 24/40 = 3/5 and 5/10 = 1/5 so 24/40 is 2/5 greater than 5/10

7 0
3 years ago
Elena and Jada are 12 miles apart on a path when they start moving toward each other. Elena runs at a constant
nataly862011 [7]

Answer:

the answer is 1.5 hrs

Step-by-step explanation:

if your qouestion is Elena and Jada are 12 miles apart on a path when they start moving toward each other. Elena runs at a constant speed of 5 miles per hour, and Jada walks at a constant speed of 3 miles per hour. How long does it take until Elena and Jada meet?

6 0
3 years ago
HELP!! Identify the transformation from ABC to A'B'C'.
elena55 [62]

Answer:

<em>Thus, the transformation from ABC to A'B'C' is a reflection over the x-axis.</em>

<em>Choice 1.</em>

Step-by-step explanation:

<u>Reflection over the x-axis</u>

Given a point A(x,y), a reflection over the x-axis maps A to the point A' with coordinates A'(x,-y).

The figure shows triangles ABC and A'B'C'. It can be clearly seen the x-coordinates for each vertex of both triangles is the same and the y-coordinate is the inverse of it counterpart. For example A=(5,3) and A'=(5,-3)

Thus, the transformation from ABC to A'B'C' is a reflection over the x-axis.

Choice 1.

7 0
3 years ago
Ginnie plans to paint a wall. She measures its height and width. She finds that she needs enough paint to cover 8 square meters.
SOVA2 [1]

Answer:

The 8 square meters represent the product of the height by the width of the wall and therefore, its area.

Step-by-step explanation:

Ginnie is going to paint a wall and measures the height and the width, the walls are usually in the form of a rectangle or square. To find the area of both we need to multiply the height by the width (in the case of the square both are the same) and this will give us the total amount of paint that we need to paint the wall.

In this example, Ginnie finds that she needs enough paint to cover 8 square meters, therefore, these 8 square meters represent the product of the height by the width (that we don't know but it doesn't matter) of the wall and therefore, its area.

7 0
3 years ago
Ignoring those who said they weren't sure, there were 297 men asked, and 183 said yes, they had driven a car when they probably
USPshnik [31]

Answer:

z=\frac{0.616-0.5}{\sqrt{\frac{0.5(1-0.5)}{297}}}=3.998  

p_v =2*P(z>3.998)=0.0000639  

With the most common significance levels used \alpha= 0.1, 0.05, 0.01 we see that the p value is lower than the significance level so then we have enough evidence to reject the null hypothesis and we can say that the true proportion is significantly higher than 0.5

Step-by-step explanation:

Information given  

n=297 represent the random sample of male taken

X=183 represent the  men who said yes, they had driven a car when they probably had too much alcohol

\hat p=\frac{183}{297}=0.616 estimated proportion of men who said yes, they had driven a car when they probably had too much alcohol

p_o=0.5 is the value that we want to test

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Hypothesis to test

We need to conduct a hypothesis in order to test the claim that the majority of men in the population (that is, more than half) would say that they had driven a car when they probably had too much alcohol, and the system of hypothesis are:  

Null hypothesis:p\leq 0.5  

Alternative hypothesis:p > 0.5  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

After replace we got:

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.616-0.5}{\sqrt{\frac{0.5(1-0.5)}{297}}}=3.998  

Decision

We have a right tailed test so then the p value would be:  

p_v =2*P(z>3.998)=0.0000639  

With the most common significance levels used \alpha= 0.1, 0.05, 0.01 we see that the p value is lower than the significance level so then we have enough evidence to reject the null hypothesis and we can say that the true proportion is significantly higher than 0.5

7 0
3 years ago
Other questions:
  • Mallory bought 6 roses for her mother.two sixth of the roses are red 4/6 are yellow.Did Mallory buy fewer red roses or yellow ro
    7·2 answers
  • G(n)=n-4 h(n) = 3n - 2<br> Find g(9) × h(9)
    9·1 answer
  • Quadrilaterals are squares
    13·1 answer
  • A) [40,100]<br> B- [30,100]<br> C- [16,100]<br> D - [11,100]
    11·2 answers
  • Question 1 (4 points)
    9·1 answer
  • Need to be taught how to do this, thanks​
    10·1 answer
  • COLLEGE MATH!!! PLS HELP!
    15·1 answer
  • El perímetro de un rectángulo es de 30 pulgadas. Si su longitud es 3 veces su ancho, calcula las dimensiones. Please answer in e
    13·1 answer
  • Given that,<br>2a + 5b=22<br>b = 2<br>Find the value of a.​
    15·2 answers
  • Anyone i just need help with numbers 1 and 2 of this thank you
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!