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Nimfa-mama [501]
3 years ago
7

Write and solve an equation to answer the problem.

Mathematics
1 answer:
joja [24]3 years ago
7 0

Answer:

Greg is 19 and Teri is 11

Step-by-step explanation:

Greg = g

Teri = t

-------------

Formulas:

2t-3= g

g+t = 30

Answer:

g = 19

t = 11

Check:

2(11)-3 = 19

19 + 11 = 30

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Determine the domain of the function graphed above.
Genrish500 [490]

Answer:

Domain: (-∞, ∞)

General Formulas and Concepts:

<u>Algebra I</u>

  • Domain is the set of x-values that can be inputted into function f(x)

Step-by-step explanation:

According the the graph, we see that our x-values are spanning forever in both directions. Therefore our domain is:

(-∞, ∞) or -∞ < x < ∞

3 0
3 years ago
Hi please help me as soon as possible:
sammy [17]

Answer:

Percentage = 14.2%

Step-by-step explanation:

<u>Given the following data;</u>

Cost of plane ticket = £588

Airport tax = $130

£1 = $1.34

To find the percentage of the total cost spent on airport tax;

First of all, we would convert the ticket cost in pounds (£) to dollars ($).

Cost of plane ticket = £588 to $ = 588 * 1.34 = $787. 92

Total cost = Cost of plane ticket + Airport tax

Total cost = 787. 92 + 130

Total cost = $917.92

Percentage \; cost = \frac {130}{917.92} * 100

Percentage  = 0.1416 * 100

<em>Percentage cost = 14.16 to 1 d.p = 14.2%</em>

<em>Therefore, the percentage of the total cost spent on airport tax by Rimo is 14.2 percent. </em>

6 0
3 years ago
For the function f(x)=-6X^2+3X +7 Evaluate f(-1)
Zigmanuir [339]

Answer:

f( - 1) =  - 2

Step-by-step explanation:

f(x) =  - 6 {x}^{2}  + 3x + 7 \\ f( - 1) =  - 6 {( - 1)}^{2}  + 3( - 1) + 7 \\  =  - 6(1) + ( - 3) + 7 \\  =  - 6 - 3 + 7 \\  =  - 2

I hope I helped you^_^

5 0
3 years ago
Which expression is equal to the length of the hypotenuse of a right triangle, formed inside the unit circle, with a radius of 1
Kitty [74]

Answer:

The length of the hypotenuse is equal to 2 units

Step-by-step explanation:

we know that

If the right triangle is formed inside the unit circle (inscribed triangle)

then

the hypotenuse of the right triangle must be equal to the diameter of the unit circle

we have

r=1 unit

D=2*(1)=2 units

therefore

The length of the hypotenuse is equal to 2 units

5 0
3 years ago
Examine the diagram and information to answer the question. Rectangle EFGH has vertices at E(7,7), F(1,5), G(2,2), and H(8,4). H
schepotkina [342]

Answer:

Perimeter of rectangle = 6√10 units (the attachment isnt clear. It seems the answer is in option B)

Step-by-step explanation:

First we find the distance of the length and width of the rectangle.

Distance between E and F = Distance EF

Distance EF = √(∆y²-∆x²)

= √[(5-7)² + (1-7)²] = √[(-2)² + (-6)²]

= √(4+36) = √40

Distance EF = 2√10

Distance between F and G = Distance FG

Distance FG = √(∆y²-∆x²)

= √[(2-5)² + (2-1)²] = √[(-3)² + (1)²]

= √(9+1) = √10

Distance FG = √10

Length= distance EF = distance HG

And width = distance FG = distance EH

Perimeter of rectangle = 2(length + width)

Perimeter of rectangle = 2(2√10 + √10)

= 2(3√10)

Perimeter of rectangle = 6√10 units (the attachment isnt clear. It seems the answer is in option B)

7 0
3 years ago
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