Evalúa las siguiente expresión algebraica,
considerando que: a=2, b=-3, c=1, d=-2 *
*
2ac + 5bd

Step-by-step explanation:

if you rent a scooter for 15 minutes you pay $1.50 ($1 to start and $0.50 rental) and if you rent it for 30 minutes then you pay $2.00 ($1 to start and $1 rental). This is NOT proportional because $1.50/15-mins and $2.00/30-min are NOT equivalent ratios

Answer:

It would be

y=2x/5 - 1

Answer:

y= 2 /5 x − 1

Step-by-step explanation:

Answer:

1 meal = $3.080

Answer: 2 hrs 40 min

Step-by-step explanation:  Ok I might be wrong so try to do other people's answers instead of mine.

So your friend is going 6 miles per hour, so he/she will be there in an hour

But you are going 3.5 miles an hour.

So what I did was divide 3.5 by 5 and 60 by 5 and found out that you are going 0.5 miles every 20 min. Then I added up the distance and time and got 6 miles every 2 hrs and 40 min

REMINDER: I might be wrong because I haven't done this question before, but tell me if I'm right or not! :D

Answer: 52.9 quarts

Step-by-step explanation:

From the question, we are informed to calculate the number of quarts that are in 50 liters.

1 liter = 1.057 liquid quarts

50 liters will now be:

= 50 × 1.057

= 52.85

= 52.9 quarts

There are 52.8 quarts rounded to the nearest tenth

In order to get the number of quarts in 50 litres, we will use the following conversion:

1 litres = 1.05669 quartz

For 50 litres;

50 litres = x

Divide both expressions

[tex]\frac{1}{50} = \frac{1.05669}{x} \\Cross \ multiply\\x = 50 \times 1.05669\\x = 52.8345[/tex]

This shows that there are 52.8 quarts rounded to the nearest tenth

Learn more here: https://brainly.com/question/17187589

Answer: 123

Step-by-step explanation:

60+63=123

180-123=57

180-57=123

Answer:

123°

Step-by-step explanation:

Subtract the measures of the given interior angles from 180 to find the measure of the missing interior angle

180 - 60 - 63 = 57°

Subtract 57 from 180 to find the measure of the external angle/angle 1.

180 - 57 = 123°

Answer:

4y−5x=−8

Step 1: Add -4y to both sides.

−5x+4y+−4y=−8+−4y

−5x=−4y−8

Step 2: Divide both sides by -5.

−5x

−5

=

−4y−8

−5

x=

4

5

y+

8

5

Answer:

x=

4

5

y+

8

5

Step-by-step explanation:

Answer:

10

x*(6/10)=6/70

x=6/70*10/6

x=1/7

11

x*2/8=6/32

x=6/32*8/2

x=3/4

12

x*1/5=1/15

x=1/15*5=1/3

13

x*1/7=1/14

x=1/14*7=1/2

14

x*1/2=1/4

x=1/4*2=1/2

15

x*2/5=14/45

x=14/45*5/2

x=7/9

Answer:

=10

Step-by-step explanation:

because 20÷10=2

70÷10=7

50÷10=5

Answer:

What error did the salesman make?

The salesman made an error when convert 270 square feet to yards.

What should be the actual cost of the carpet?

The actual cost of the carpet is $360

Step-by-step explanation:

From the question, we are told that:Tisha orders a carpet for a room that measures 270 square feet.

This means the room needs 270 square feet of carpet

But from the question, we know that the carpet is sold in square yards

We convert square feet to square yards

For our conversion rates

3 ft = 1 yard

9 ft² = 1 square yards(yd²)

270 ft² = x

Cross Multiply

9 ft² × x = 270ft² × 1 yd²

x yd²= 270ft² × 1 yd²/9 ft²

x = 30 yd²

Hence, 270ft² = 30yd²

Cost of carpet =

1 yd² = $12.00

30 yd² =

Cross Multiply

= 30 × $12.00

= $360.00

The actual cost of the carpet is $360

What error did the salesman make?

The salesman made an error when convert 270 square feet to square yards.

He said 270 square feet = 90 square yards

But he was wrong.

270 square feet = 30 square yards.

What should be the actual cost of the carpet?

The actual cost of the carpet is $360

Answer:360 for the actual cost

Step-by-step explanation:

Answer:

.8

Step-by-step explanation:

you would take 12 over 30 and set that equal to x over 2. then multiply 12 times 2 which is 24 then divide 24 by 30 which is .8

Answer:

9x

Step-by-step explanation:

-4.5X(-2)

-4.5x * -2

9x

Answer:b

Step-by-step explanation:

Answer:

y=  (2/5)X +3  

Step-by-step explanation:

when you connect the 2  points the line intercepts  at 3 in the y coordinate

Grab a piece of  graph paper , and plug   the points and connect them

Starting at-5,1  count 2 up 5 right,  2 up 5 right..........

When you  reach y coordinate you are at 3

The slope is 2/5  y-intercept is 3

Answer:

320 feet

Step-by-step explanation:

your mom

hope this helps:)

Problem 1

----------

Explanation:

Complementary angles add to 90

(angle1)+(angle2) = 90

(5x+6)+(68-x) = 90

4x+74 = 90

4x = 90-74

4x = 16

x = 16/4

x = 4

So,

angle1 = 5x+6 = 5(4)+6 = 26

angle2 = 68-x = 68-4 = 64

Note how

angle1+angle2 = 26+64 = 90

to help check our answer

==========================================

Problem 2

----------

Explanation:

The shortest side of a triangle is always opposite the smallest angle.

The longest side of a triangle is always opposite the largest angle.

Based on those two facts, we can say the shortest side is BC (since angle A = 53 is the smallest angle) and the longest side is AB (since angle C = 70 is the largest)

The order from smallest to largest is

BC, AC, AB

==========================================

Problem 3

----------

Explanation:

Use the reverse of the idea from problem 2. We know that AC is the smallest side which must mean that angle B is the smallest angle. Since BC is the largest side, angle A must be the largest angle.

The order of the angles is B < C < A

==========================================

Problem 4

----------

Explanation:

The same side exterior angles must be supplementary to have parallel lines.

==========================================

Problem 5

----------

Explanation:

Use the same idea as problem 2. The smallest angle is opposite the smallest side. The smallest side is 48, so angle G being opposite of that side, is the smallest angle.

Angle O would be the largest as it is opposite the largest side DG = 70

Answer:

Its either the 1,2,3, or 4

BHAHABSHABIDBSHBDIHVIHA

jk

The answer is -9,-1

Have a good day:)

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

The answer is (-9,-1)

If you graph them you could see that this point isn't in the shaded area.

Answer:

do this by first finding the greatest common factor of 0 and 23, which is 23

Then, we divide both 0 and 23 by the greatest common factor to get the following simplified fraction 0/1

Step-by-step explanation:

Hope it helped! :D

Answer:

is it s/12

Step-by-step explanation:

Answer:

25 mL

Step-by-step explanation:

m/D=V

75g/3 g/mL = V

25mL =V

Correct question is;

Joe had a summer job that pays $7.00 an hour and he worked between 15 and 35 hours every week. His weekly salary can be modeled by the equation: S = 7h, where S is his weekly salary and h is the number of hours he worked in a week.

What is the reasonable Domain and Range?

Answer:

Domain is: 15 ≤ x ≤ 35

Range is: 105 ≤ x ≤ 245

Step-by-step explanation:

We are told that Joe works between 15 and 35 hours every week.

This means that he works at least 15 hours or at most 35 hours a week.

Thus, domain is; 15 ≤ x ≤ 35

We are told that his weekly salary can be modeled by the equation: s = 7H

Where s is salary and H is number of hours worked per day.

Thus;

Lower range is; s = 7 × 15 = $105

While higher range is; s = 7 × 35 = $245

Thus, range is 105 ≤ x ≤ 245

Answer:

The answer is "Option a".

Step-by-step explanation:

please find the attached file.

In the given question, the positive correlation shows the scatterplot and, by adding six now higher calories, low-fat pasta, is the positive value for the new correlation of the coefficient will be decreasing.

In this question, the points are more close to the line and increasing from left to right, which can be mostly like, that's why the choice "a" is correct.

Answer: Yes, it is linear. The slope is -2

Step-by-step explanation:

move the 2x over to the other side and get y=-2x+4, the slope in a linear equation is m in the formula y=mx+b, in this case, m=-2

Answer:

14 and 50

Step-by-step explanation: