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3 years ago

Help with #7 please I don’t understand

Mathematics

2 answers:

krek1111 [17]3 years ago

8 0

So your answer is A.

quester [9]3 years ago

4 0

Answer:

Step-by-step explanation:

(2x^2 + 3x - 4) (x + 4)

FOIL.

2x^2 times x = 2x^3

3x times x is 3x^2

-4 times x = -4x

2x^2 times 4 = 8x^2

3x times 4 = 12 x

-4 times 4 = -16

Combine like terms to get 2x^3 + 11x^2 + 8x - 16.

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A committee must be formed with 5 teachers and 4 students. If there are 6 teachers to choose from, and 15 students, how many dif

ZanzabumX [31]

Answer:

8190 ways

Step-by-step explanation:

Given

$Teachers = 6$

$Students = 15$

Selection

$Students = 4$

$Teachers = 5$

Required

Number of ways of selection

4 students can be selected from 15 students in:

$Students= ^{15}C_4$

Similarly.

5 teachers can be selected from 6 teachers in:

$Teachers= ^{6}C_5$

So, the required number of selection is:

$Selection = ^{15}C_4 * ^6C_5$

Apply combination formula:

$Selection = \frac{15!}{(15-4)!4!} * \frac{6!}{(6-5)!5!}$

$Selection = \frac{15!}{11!4!} * \frac{6!}{1!5!}$

$Selection = \frac{15*14*13*12*11!}{11!*4*3*2*1} * \frac{6*5!}{1*5!}$

$Selection = \frac{15*14*13*12}{4*3*2*1} * \frac{6}{1}$

$Selection = \frac{32760}{24} * 6$

$Selection = 1365 * 6$

$Selection = 8190$

8 0

3 years ago

What are the zeros of the quadratic function represented by this graph?

mario62 [17]

Answer:

Step-by-step explanation:

answer : C when this graph passes trough x-axis

6 0

3 years ago

*26 POINTS* pls help

Doss [256]

Answer:

If you want to draw a perpendicular line from a point on a line, you would measure a 90 degree angle from that point and then draw the line outward.

Explanation

On the other hand, if you wanted to draw a perpendicular line connecting a line and a point off of the line, you would have to connect the point to the location on the line that forms a 90 degree angle.

Both methods involve making a 90 degree angle between two lines. Can you think of any other similarities?

5 0

2 years ago

Pls help! simple question will give brainliest!

Sphinxa [80]

Answer:

Factor $x^{4}$ −2401

$x^{4}$ −2401

=( $x^{2}$ +49)(x+7)(x−7)

7 0

3 years ago

Read 2 more answers

Anne’s family is driving to her uncle’s house. The family travels 383.5 miles between 10:15 a.m. and 4:45 p.m.Anne tells her fam

Ede4ka [16]

Answer:

They would have arrived at 5:55pm

Step-by-step explanation:

kindly see the attached file for more explanation

8 0

3 years ago