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Nadya [2.5K]
3 years ago
13

Question

Mathematics
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer: r = 11

Step-by-step explanation:

We know that the point (-2, r) lies on the graph of:

2*x + y = 7.

Then, if we that point is on the graph of the equation, we can replace the values and we will have:

2*(-2) + r = 7

and now we solve this for r-

-4 + r = 7

r = 7 + 4 = 11

r = 11

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Select all the correct statements.
myrzilka [38]

Answer: B C E F

Step-by-step explanation:

A is wrong as it should be the other way around

B is right

C is right

D is wrong as Natural numbers is a subset of rational numbers

E is correct

F is correct

3 0
2 years ago
Aramp is 17 feet long, rises 8 feet above the floor, and covers a horizontal distance of 15 feet, as shown in the figure.
bonufazy [111]

Answer:

The ratio of Tan B is

\tan B= \dfrac{AC}{BC}=\dfrac{8}{15}

OR

\tan A= \dfrac{BC}{AC}=\dfrac{15}{8}

Step-by-step explanation:

In Right Angle Triangle ABC

angle C = 90°

AB = Ramp = 17 feet

BC =Horizontal distance = 15 feet

AC = Height from floor = 8 feet

To Find:

Ratio of Tan B = ?

Solution:

In Right Angle Triangle ABC By Tangent Identity we have

\tan B= \dfrac{\textrm{side opposite to angle B}}{\textrm{side adjacent to angle B}}

Substituting the given values we get

\tan B= \dfrac{AC}{BC}=\dfrac{8}{15}

OR

\tan A= \dfrac{BC}{AC}=\dfrac{15}{8}

5 0
3 years ago
Angelina paid $6.60 for a dozen cupcakes for a birthday party. What is the unit cost for each cupcake? *
S_A_V [24]

Answer:$.55

Step-by-step explanation:

An important thing to know is that a dozen is equal to 12.

12x= 6.60

/12     /12

x=.55

3 0
3 years ago
Read 2 more answers
How to solve 45=6n+3n
Naddik [55]
<em>45 = 6n + 3n 
45 = 9 n
dividing 9 on other side
45 / 9 = n
5 = n 
or 
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</em>
5 0
3 years ago
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Which is represented by this model
Usimov [2.4K]

Answer:

C

Step-by-step explanation:

Because 3 * 3/6 or 3* 1/2 equals 1.5 or 1 and 1/2 and that is what is shown on the graph!

Hope this Helps!

7 0
3 years ago
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