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3 years ago

Factorise fully60 + 10b

Mathematics

1 answer:

sladkih [1.3K]3 years ago

3 0

Factor:
10(6+b)
.. . . . .

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3(x-2)+4(x-2)-5(x-2)

Stels [109]

Answer:

2x - 4

Step-by-step explanation:

5 0

3 years ago

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.

SpyIntel [72]

Let

x------> the number of multiple choice question

y------> the number of free response question

we know that

$3x+8y=55$ -----> equation A

$x+y=15$

$x=15-y$ -----> equation B

Substitute equation B in equation A

$3[15-y]+8y=55$

$45-3y+8y=55$

$5y=55-45$

$5y=10$

$y=2$

Find the value of x

$x=15-y$

$x=15-2=13$

therefore

<u>the answer is</u>

the number of multiple choice question are $13$

the number of free response question are $2$

5 0

3 years ago

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Which graph represents a line with a slope of and a y-intercept equal to that of the line y = x – 2?

Sindrei [870]

Answer:

(0, -2), (1, -1), (2,0)

Step-by-step explanation:

should be along those lines

8 0

4 years ago

Can u please explain how to do this?

mafiozo [28]

B is the correct answer.
8 x 35 = 280

5 0

4 years ago

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Image of question provided

inna [77]

Answer:

To solve this problem, we can use a system of equations.

We know the quadratic expression has the form

$f(t)=at^{2}+bt$

Using points (1,12) and (4,0), we can form the following system to find a and b.

$12=a+b$

$0=16a+4b$

We need to divide the second equation by -4 and sum both equations

$12=a+b\\0=-4a-b$

$12=-3a\\a=\frac{12}{-3}\\ a=-4$

Then, we use this value to find the other variable

$12=a+b\\12=-4+b\\b=12+4\\b=16$

<h3>Therefore, the quadratic function that models the situation is</h3>

$f(t)=-4t^{2} +16t$ or $f(t)=-4t(t-4)$

According to this expression, after 2 seconds, the height is 16 feet.

$f(2)=-4(2)(2-4)=-8(-2)=16$

7 0

3 years ago

Factorise fully60 + 10b​

Factorise fully60 + 10b