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4 years ago

What addition doubles facts can help you find 4+3

Mathematics

2 answers:

AlekseyPX4 years ago

5 0

All these things I'm naming right know will help you. 3+3+1, 5+5-3, 2+2+2+1, @nd 1+1+1+1+1+1+1 they all equal 7.

Oduvanchick [21]4 years ago

3 0

3+3= 6

6+1= 7 is your answer

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What is the formula of (2x+3y)²

zhannawk [14.2K]

Answer:

4x²+12xy+9y²

(2x+3y)²

=(2x+3y)*(2x+3y)

2x *2x , 2x *3y , 3y* 2x ,3y* 3y

=4x²+12xy+9y²

6 0

2 years ago

If the scale of the map is 1 inch = 125 miles, two points that are 3.75 inches apart will actually be approximately how many mil

lys-0071 [83]

Answer:

469 miles

Step-by-step explanation:

1 in = 125 miles

3.75 in =?

3.75 x 125 = 468.75 miles

468.75 rounds up to 469 miles

3 0

3 years ago

How to factor ax2 bx c?

Burka [1]

In the same way as you could factor trinomials on the form of

x2+bx+cx2+bx+c

You can factor polynomials on the form of

ax2+bx+cax2+bx+c

If a is positive then you just proceed in the same way as you did previously except now

ax2+bx+c=(x+m)(ax+n)ax2+bx+c=(x+m)(ax+n)

where c=mn,ac=pq and b=p+q=am+n

8 0

3 years ago

A basketball player made 12 out of 15 free throws she attempted. She wants to know how many consecutive free throws she would ha

klemol [59]

Answer:

a) $\frac{12+n}{15+n}=0.85$

b) She needs 5 consecutive free throws in order to raise her percent to

85 %

Step-by-step explanation:

We know that a basketball player made 12 out of 15 free throws she attempted.

We can calculate its percent of successful free throws as :

$\frac{12}{15}=0.8$

$(0.8).(100)=80$ %

Now, If she wants to know how many consecutive free throws she would have to make to raise the percent of successful free throws to 85 % we can write :

$\frac{12+n}{15+n}=0.85$ (I)

In the equation (I) ''n'' represents the number of consecutive free throws she must have to raise the percent to 85 %.

We answer

a) $\frac{12+n}{15+n}=0.85$

b) Now we need to solve the equation (I) :

$\frac{12+n}{15+n}=0.85$ ⇒

$12+n=(15+n).(0.85)$ ⇒

$12+n=12.75+0.85n$ ⇒

$0.15n=0.75$ ⇒ $n=\frac{0.75}{0.15}=5$

We found out that she needs 5 consecutive free throws to raise the percent of successful free throws to 85 %.

We can verify by replacing the value of ''n'' in the equation (I) ⇒

$\frac{12+5}{15+5}=0.85$ ⇒ $\frac{17}{20}=0.85$ ⇒ $0.85=0.85$

6 0

3 years ago

Find the value of x. A. 21 B. 4 C. 13 D. 11

GenaCL600 [577]

Answer:

I believe the answer is B

3 0

3 years ago