x - 2y = 5
3х - 5y = 8

Answer:

1 and a half per day.

Step-by-step explanation:

6/4 = 1.5

Day 1: Chapters 1 and half of 2

Day 2: Chapters half of 2 and 3

Day 3: Chapters 4 and half of 5

Day 4: Chapters half of 5 and 5

Answer:

65

Step-by-step explanation:

180-115=65

It needs to be a total of 180 so just do what I did :)

Answer:

$1040

Step-by-step explanation:

Answer:

6,5,4,3,2,1

Step-by-step explanation:

Any number below 7 that is positive

Answer:

1 is 0.5% of 200

Hope it helped u,

pls mark as the brainliest

^_^

Answer:

$30

Step-by-step explanation:

Given that :

Amount earned for mowing = $45

Amount spent on music = $5

Amount earned for washing neighbor's car = $10

Amount saved = half or remaining amount

Amount of dollars Fred keeps =

Amount Fred keeps:

[(Amount earned - amount spent) / 2] + $10

[($45 - $5) / 2] +

($40 / 2) + $10

= $20 + $10

= $30

51 + 19 = 70

51 - 19 = 32

hope that helped!!

Answer:

51 and 19

Step-by-step explanation:

Answer:

Step-by-step explanation:

North and Souths get added together. North is positive and South is negative.

East and West get added together. East is positive and West is negative.

This will get us two numbers for a triangle that we can make starting at the origin and ending where the two numbers take us.

10 miles north + 14 miles north = 24 miles north

10 + 14 = 24

5 miles west + 12 miles east = 7 miles east

-5 + 12 = 7

See attached image for picture and rest of work.

Answer:

started fraction 27 over 64 end fraction step by step the expression itself three fourths cubed

Answer:

the answer is   27/64

Step-by-step explanation:

(3/4)x(3/4)x(3/4) is 27/64

Answer:

8.04063*10^2

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Answer:

804.063

Step-by-step explanation:

8 x 100 = 800, 4 x 1 = 4, 6 x 1/100 = 0.060, and 3 x 1/1,000 = 0.003.

Answer:

$1,800

Step-by-step explanation:

If Michael works 30 hours a week for $15 an hour we can use the equation:

15 x 30 = 450.

Now just multiply the given answer by 4 and you're left with:

450 x 4 = 1800.

Answer:

29

Step-by-step explanation:

Answer:

n=29sides

sum of interior angle of polygon=(n-2)180=(29-2)180=27×180=4860°

Answer:

9x^2 +30x +26.  g(f(x)) = (3x + 5)^2 + 1

Step-by-step explanation:

The value of function g(f(x)) will be (3x + 8).

What is Function?

A relation between a set of inputs having one output each is called a function.

Given that;

The value of functions are;

f(x) = 3x + 5 and g(x) = x + 1

Now, Find the value of function f(g(x)) by substituting the given values as;

f(g(x)) = f (x + 1)

        = 3 (x + 1) + 5

        = 3x + 3 + 5

        = 3x + 8

Thus, The value of function g(f(x)) will be (3x + 8).

Learn more about the function visit:

https://brainly.com/question/20384115

#SPJ2

Answer:

3x^3+2x^2-3x+4/x+2

Step-by-step explanation:

Answer:

$252

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 3%/100 = 0.03 per year,

then, solving our equation

I = 1200 × 0.03 × 7 = 252

I = $ 252.00

The simple interest accumulated

on a principal of $ 1,200.00

at a rate of 3% per year

for 7 years is $ 252.00.

Answer:

8+2[tex]\sqrt{20\\}\\[/tex]

Step-by-step explanation:

2+2+2+2+[tex]\sqrt{20\\}\\[/tex]+[tex]\sqrt{20\\}\\[/tex]=8+2[tex]\sqrt{20\\}\\[/tex]

4^2+2^2=h^2

20=h^2

h=[tex]\sqrt{20\\}\\[/tex]

Answer:

slope=(3--5)/(7--4)=8/11

Step-by-step explanation:

slope=(3-4)/(10-8)=-1/2

Answer:

Kindly check explanation

Step-by-step explanation:

A.)

The problem with the here is that we might have introduced bias into our sample by failing to randomize the assignment of gender. By pacing the male gender in the treatment group and females into the control group, this might spring up a spurious association in our experiment as a result of a possible confounding variable, gender. Therefore, assignment of subject shouldn't be on the basis of gender.

2.)

Using a coin toss in placing subjects into groups will give a good random assignment, however, since only ten subjects are available and of which 5 will be placed into each group, there is no certainty that there will be equal number of heads and tails during the 10 flips. Alternatively, a random selection of the name of the 10 subjects could be chosen from a raffle.

3.)

Each batch of rat might be homogenous and hence will affect our experiment and definitely our conclusion. It would be best to assign rats from each batch to all treatment groups in other to obtain a good random design

Answer:

43

Step-by-step explanation:

v+47 is equal to 90 degrees, because it's a right angle

v+47=90

to get 90 in this equation, v must equal 43.

that means v=43

Answer: x ≥ 7

Step-by-step explanation:

You have to square both sides of the equation. You can manipulate an equation or function any way imaginable as long as it is done equally and helps the problem become easier. If we square this, the radical will cancel and we will get two trinomials equal to each other.

[tex]x^2-14x+49=(x-7)^2\\x^2-14x+49=x^2-14x+49[/tex]

We can see the two expressions are exactly equal to each other. All real numbers are solutions, besides a few. These few are when the radical is equal to a negative number. So lets set up an inequality stating that the radical must be greater than or equal to 0.

[tex]x^2-14x+49\geq 0\\(x-7)^2 \geq 0\\x \geq 7[/tex]

Answer:

-1310715

Step-by-step explanation:

By the formula of a geometric sequence, we work out:

[tex]\sum_{k=1}^{18} -5 \cdot 2^{k-1}\\= -5 \cdot \sum_{k=0}^{17} 2^{k}\\= -5 \cdot \frac{2^{18}-1}{2-1}\\= -1310715[/tex]