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nlexa [21]
3 years ago
13

Please answer this and I’ll make you Brainly

Mathematics
1 answer:
murzikaleks [220]3 years ago
3 0

Answer:

-4 = ?

Step-by-step explanation:

<u>Step 1:  Substitute -1 for x</u>

7x^3 + 5x^2 - 2 = ?

7(-1)^3 + 5(-1)^2 - 2 = ?

7(-1) + 5(1) - 2 = ?

-7 + 5 - 2 = ?

-4 = ?

Answer: -4 = ?

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The table shows the relationship between the cost of renting a car from the Wrecko Car Rental Company and the number of days for
Fudgin [204]

Answer:

The cost of renting the car for 20 days is $481

Step-by-step explanation:

The table of values can be formed as follows;

Day,   Cost

1,         $44

2,        $67

3,        $90

4,        $113

7,        $182

10,      $251

From the given values and the scatter plot, there is a straight line relationship between the cost and the number of days of rental of a car.

The line of best fit is therefore a straight line and from the constant increase in cost ($23) for each extra day of rental, it is possible to find the slope, m, of the data as follows;

Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}

(x₁, y,) and (x₂, y₂) can be taken as (1, $44) and (3, $90) respectively to give;

Slope, \, m =\dfrac{90-44}{3-1} = \dfrac{46}{2} = 23 \ as \ stated \ above

The equation in slope and intercept form is therefore, y  - 44 = 23×(x - 1), which gives;

y - 44 = 23·x - 23

y = 23·x - 23 + 44 = 23·x + 21

The cost of renting the car for 20 days is then;

10×23 + 21 = $481

The cost of renting the car for 20 days = $481.

5 0
3 years ago
HELPPPP<br> What is MB<br><br><br> 48<br> 96<br> 110<br> 55
Lady_Fox [76]
Minor Arc AC =  110 degrees  (given)
As indicated in the hints,
OA=OC  => OAC=OCA=(180-110)/2 = 35
Similarly,
OAB=OBA=(48-35)=13
=>
OBC=OCB=(180-35-35-13-13)/2=(180-96)/2=84/2=42
=>
Angle B = 13+42 = 55 degrees

Check:
55+55+35+35+13+13 = 180 degrees (angles of a triangle)  ok.

3 0
3 years ago
Please help, much needed. A lot of points
svetoff [14.1K]

Answer:

A. -9

Step-by-step explanation:

If one of the variables were negative than, it would not be able to equal 2/7.

8 0
3 years ago
Read 2 more answers
What is the coefficient in this expression?5 minus 4.7 minus 2 x + StartFraction 5 over 8 EndFractionNegative 4.7Negative 2Start
WITCHER [35]

Answer:

-2

Step-by-step explanation:

i did the test

4 0
2 years ago
Hello, could someone please help me with this question and also explain it to me to?
AlladinOne [14]

Answer:

Step-by-step explanation:

just plot the given data on graph

5 0
2 years ago
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