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Damm [24]
3 years ago
10

GIVING BRANLIEST!!!!!! 1O POINTS Tiffany is taking a 42-question test worth 100 points. The test includes two-point and four-poi

nt questions. How many of each type of question are on the test?
Which equations represent the scenario, where t represents the number of two-point questions and f represents the number of four-point questions? Check all that apply.
t + f = 42
t + f = 100
2t + 4f = 42
2t + 4f = 100
4t + 2f = 100
Mathematics
2 answers:
luda_lava [24]3 years ago
7 0

Answer:

2t + 4f = 100

t+f =42

Step-by-step explanation:

t= two point questions

f =four point questions

2t + 4f = 100

t+f =42

there are 34  two point questions and 8 four point questions

to solve multiply the second equation by -2

-2t -2f = -84

add this to 2t +4f = 100

2t + 4f = 100

-2t -2f = -84

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

2f = 16

divide by 2

f = 8

there are 8 four point questions

t+f=42

t+8 = 42

subtract 8

t = 34

there are 34 2 point questions

jolli1 [7]3 years ago
7 0

Answer:

2t + 4f = 100

t+f =42

Step-by-step explanation:

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Read 2 more answers
Question:
Genrish500 [490]

Answer:

x=56 and the exterior angle is 116

Step-by-step explanation:

We will call the unknown angle in the triangle y.  Angle y and the angle (2x +4) form a straight line so they make 180 degrees.

y + 2x+4 =180

Solve for y by subtracting 2x+4 from each side.

y + 2x+4 - (2x+4) =180 - (2x+4)

y = 180-2x-4

y = 176-2x


The three angles of a triangle add to 180 degrees

x+ y+ 60 = 180

x+ (176-2x)+60 = 180

Combine like terms

-x +236=180

Subtract 236 from each side

-x+236-236 = 180-236

-x = -56

Multiply each side by -1

-1*-x = -56*-1

x=56

The exterior angle is 2x+4.  Substitute x=56 into the equation.

2(56)+4

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116


8 0
4 years ago
Help a girl out with this problem
Masja [62]
The last choice because anything greater than a negative number eventually leads to the posetive numbers, plus substituting any posetive number aolves the inequality.
8 0
3 years ago
Jefferson works part that me and earns $1520 in four weeks how much money does he earn each week
11Alexandr11 [23.1K]
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7 0
3 years ago
Is to be constructed for use on padre island beaches. it is to have a back, two square sides, and a top. if 96 square feet of ca
ss7ja [257]
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where W is the width and L is the length of a back and a top side. Two square sides have area W².
2 W L = 96 - 2 W² /:2
W L = 48 - W²
L = ( 48 - W² ) / W.
The inside volume of the shelter:
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V = W² · ( 48 - W² ) / W ;
V = 48 W - W³
We have to find the derivative:
V ` = 48 - 3 W²
48 - 3 W² = 0 ( for V max. )
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L = ( 48 - 16 ) / 4 = 32 / 4 = 8 ft.
Answer: The length of the shelter for which the volume inside is maximized is  8 ft.
8 0
3 years ago
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