Solve by the substitution method.      7x+8y=10 -3x+y=9

Answer:

B. 2x - 5 = 2y + 14

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

Step-by-step explanation:

From the choices given, we know the equation must have a y in front of the equal sign. The only answer choice that does not fit this is B.

Therefore, that is our answer.

Answer:

Step-by-step explanation:

2x^+9x=10

2x^2+9x-10=0 is standard form

Answer: 1.5

Step-by-step explanation:

DE=√(8-5)^2+(-0.5-1)^2 =√11.25≈3.35

AB=√(2-1)^2+(3-1)^2 =√5≈2.24

DE:AB ≈ 3.35 : 2.24 ≈ 1.5

Answer: (x-6)= -5

(x+4)= -1

Step-by-step explanation:

The reminders when Polynomial P(x) is divided by (x -6) and (x +4) are -5 and -1 respectively.

An algebraic equation that has more than two terms, particularly the accumulation of numerous phrases that each include a different power of the same variable (s).

Given, P(x) is a polynomial. Here are a few values of P(x).

P(-6) = 3, P(-4) = -1, P(4) = 2, and P(6) = -5

The remainder theorem says that:

“When a polynomial p(x) is divided by (x−a), the remainder is p(a).

Since, p(6) is -5 and p(-4) is -1

Thus, the remainder when P(x) is divided by (x – 6) is -5

the remainder when P(x) is divided by (x + 4) is -1

Therefore, When Polynomial P(x) is divided by (x -6) and (x +4) the reminders would be -5 and -1 respectively.

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Answer: 3

Step-by-step explanation: cant see other graphs

Answer:

96.56 kilometers

Step-by-step explanation:

Answer:

the distance between happyland and giggleville is 96.54 km

Answer:

5 (c + 8) = 2

Step-by-step explanation:

:D

BRAINLIEST APPRECIATED

Answer:

The answers is C I think

Answer:

A) Adding & subtracting fractions

Step-by-step explanation:

Answer:

[tex]m=\sqrt{2}[/tex] inches

Step-by-step explanation:

From the diagram, it is given that the triangle is a right angle isosceles triangle (angles are 45°, 45° and 90°). This means that the two shorter sides of the triangle are equal in length and that the side [tex]m[/tex] can be found by using the Pythagorean theorem [tex]a^{2}+b^{2}=c^{2}[/tex].

[tex]m^{2}+m^{2}=2^{2}[/tex] (The two shorter sides of the triangle are equivalent)

[tex]2m^{2}=4[/tex]

[tex]m^{2}=2[/tex]

[tex]m=\sqrt{2}[/tex] inches

I hope this helps :)

Answer:

Step-by-step explanation:

Arange the numbers in ascending order

14,18,20,28,36,58,71

You will see that the median of these data set is 28. So when you multiple it by 18, the answer will be 504.

Therefore, the answer is B. 504

Answer:

but i think for 1 you multiply both variables by 3......

A) (0,3) B) (6,3) C) (6,-3)

and for 2 you multiply by -1 so........

A) (0,-3) B) (1,-2) C) (4,-5)

im not 100% sure on the second one...but hey i tried right?

-2 + 2

If you need an answer too. The answer is 0.

Answer: 6 miles

Step-by-step explanation:

Answer:

Li can walk 2 miles in 45 minutes. At this rate how far can she walk in 135 minutes?

Step-by-step explanation

6 miles

SO first divide 135 by 45

You’ll get 3

Now using 3 we multiply that by 2

youll get 6 miles

when dividing two fractions ex:

(1/3) / (1/6)

we take the reciprocal (we switch the bottom and top numbers) of the second fraction and then change the division into multiplication

(1/3) x (6/1)

multiply across to get

6/3

which is 2

hope this helps

keep the first set if fraction change the divison sign in to a multiplication. and flip the next set of numbers hope this helps

Answer:

12:1 or 1:12

Step-by-step explanation:

For every 1 non fiction there is 12 fiction or for every 12 fiction there is 1 non fiction

The required ratio of the number of fiction books she read to the total number of books that she read is 12 / 13.

Given that,
Emily read 24 fiction books and 2 nonfiction books.
To determine the ratio of the number of fiction books she read to the total number of books that she read.

The ratio can be defined as the comparison of the fraction of one quantity towards others. e.g.- water in milk.

Here,
Number of fiction books  = 24
number of nonfiction books = 2
Total number of books = 24 + 2 = 26
The ratio of a fiction book to the total number of books,
= 24 / 26
= 12 / 13

Thus, the required ratio of the number of fiction books she read to the total number of books that she read is 12 / 13.

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Answer:

real answer 2

Step-by-step explanation:

the answer is 7 in my mind but sometimes it might be 11

Answer:

The answer would be 95

Step-by-step explanation:

180=63+22+x

x=180-63-22

x=95°

Answer:

D second one D and C

Step-by-step explanation:

edg2020

Answer:

D.

Step-by-step explanation:

edge… you’re welcome!

9514 1404 393

Answer:

  AC ≈ 7.3

Step-by-step explanation:

Corresponding sides of similar triangles are proportional.

  AC/BC = DF/EF

  AC/18 = 15/37 . . . . fill in the given values

  AC = 18(15/37) . . .  multiply by 18

  AC ≈ 7.3

Answer:

no

Step-by-step explanation:

2/6 simplifies to 1/3 and 2/4 simplifies to 1/3. 1/2 is greater than 1/3

Answer:

4,022.5 m

Step-by-step explanation:

When an observer watches an object lying on the ground from an elevated point on the ground then the angle formed between horizontal line and the line of vision is known as ANGLE OF DEPRESSION.

When an observer watches an object from a point on the ground situated at some height from the ground from the ground then the angle formed between horizontal line and the line of vision is known as ANGLE OF ELEVATION .

Let the distance of the rock from the airplane be x meters.

[tex] \sin \: 25 \degree = \frac{1700}{x} \\ \\ 0.4226182617 = \frac{1700}{x} \\ \\ x = \frac{1700}{0.4226182617} \\ \\ x = 4,022.54269 \\ \\ x = 4022.5 \: m[/tex]

Zoe spent "$5.25" on apples. A further solution is below.

As we know,

Now,

→ [tex]M = 3.50 P[/tex]

here,

then,

By substituting the value, we get

→ [tex]M = 3.50\times 1.5[/tex]

→      [tex]= 5.25[/tex] ($)

Thus the above answer is correct.

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Answer:

-7+5=-2

blank= -7

Explanation:

Hope this helps.

Answer: y-100= 0.25(x-160)

Step-by-step explanation:

Given: Charge per mile = $0.25

Total amount driver pays = $100

Number of miles he drove = 160 miles

Total cost = Flat fee +  ( Number of miles he drove) (Charge per mile) ...(i)

i.e. 100= Flat fee +  (160)(0.25)

⇒ Flat fee = 100 - (160)(0.25)

If y= total cost , x= number of miles, then

y= ( 100 - (160)(0.25))+ (x)(0.25)  [Substitute value of flat fee in (i)]

⇒ y= 100 - (160)(0.25)+ (x)(0.25)

⇒ y-100= (x)(0.25)- (160)(0.25)

⇒  y-100= 0.25(x-160)

Hence, the required equation:  y-100= 0.25(x-160)

Answer:

(y+1)/5

Step-by-step explanation:

you meant f^-1(x) ?

let y= 5x-1

Make x subject of formula

y+1=5x

x=(y+1)/5

f^-1(x)=(x+1)/5 replace y by x

Answer:

1/5log2(x)+4/5log2(y)-4/5

Step-by-step explanation:

=log2{(xy^4/16)}^1/5

=1/5×log2(xy^4/16)

=1/5×{log2(xy^4)-log2(16)}

=1/5×{log2(x)+log2(y^4)-log2(2^4)}

=1/5×{log2(x)+log2(y^4)-4)} ( as loga(a^x)=x)

=1/5×log2(x)+1/5log2(y^4)-4×1/5 (distribute 1/5 through the parentheses)

=1/5×log2(x)+1/5×4log2(y)-4/5

=1/5log2(x)+4/5log2(y)-4/5