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3 years ago

What is the sum of the polynomials? (m + n + 3) + (m + n + 4)

Mathematics

2 answers:

Ainat [17]3 years ago

4 0

Answer:

i honestly dk but need help

Step-by-step explanation:

Karo-lina-s [1.5K]3 years ago

4 0

Answer:

2m+2n+7

Step-by-step explanation:

See image below:)

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How do you find the value for x in the problem?

Nata [24]

Make use of the fact that side lengths in similar triangles are proportional.
.. 30/18 = (20 +x)/20
.. 20*(30/18) -20 = x . . . . multiply by 20, subtract 20
.. 33 1/3 -20 = x . . . . . . . . evaluate the product
.. 13 1/3 = x

6 0

4 years ago

stat: sample of 780 adults in the U.S.A., it was found that 80 of those had a pinworm infestation. You want to find the 99% conf

Anettt [7]

Answer: 554

Step-by-step explanation:

If prior population proportion is known, then the formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

As per given description, we have

p= 0.1

E=0.025

Critical z-value for 95% confidence : $z_{\alpha/2}=1.96$

Then,

$n=0.1(1-0.1)(\dfrac{1.96}{0.025})^2=553.1904\approx554$

Hence, the minimum sample size required = 554.

7 0

4 years ago

Translate the sentence into an equation.

lozanna [386]

9w - 7 = 5

9w= 5+7

9w=12

w= 4/3 or 1.33

3 0

3 years ago

Which expression is equivalent to (7x – 5) – (3x - 2)

Nastasia [14]

Answer:

Step-by-step explanation:

We have the expression

$(7x-5)-(3x-2)$

First we need to distribute the negative throughout the parenthesis. Then we can combine like terms in order to simplify this expression

$(7x-5)-(3x-2)\\\\7x-5-3x+2\\\\4x-3$

This answer matches D.

3 0

3 years ago

Can someone please help me find the measure of angle ABO?

lara [203]

Answer:

m<ABO = 22 deg

Step-by-step explanation:

A tangent intersects a circle at the point of tangency making a right angle with the radius drawn to that point. That means that <BAO is a right angle and measures 90 deg. That makes the other two angles of the triangle complementary with a sum of 90 deg.

m<O + m<B = 90

68 + m<B = 90

m<B = 22

Answer: m<ABO = 22 deg

3 0

3 years ago