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vfiekz [6]
3 years ago
15

a student achieved the following grades on his tests :87,95 ,76 and 88 percent . he wants 85 percent or better overall . what gr

ade should he must get in his last test to achieve that average
Mathematics
2 answers:
Pachacha [2.7K]3 years ago
8 0

Answer:

Atleast 79

Step-by-step explanation:

Average 》 85

If 5 tests,

Sum 》 85×5

Sum 》 425

Let the fifth test score be X

X + 87 + 95 + 76 + 88 》 425

X 》425 - 346

X》79

m_a_m_a [10]3 years ago
4 0

Answer:

Step-by-step explanation:

87+95+76+88+x/5=85

346+x=85x5

x=425-346

x=79

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8 0
3 years ago
If vector u = <-3.5, -1.5> and vector v = <-1.25, 2.25>, which graph shows the resulting vector for 2v − u?
Sedaia [141]

Answer:

D

Step-by-step explanation:

We know that vector addition is scalar addition.

Given vectors are u = <-3.5, -1.5> and v = <-1.25, 2.25>

2v = < -2.5, 4.5>

2v - u = < -2.5, 4.5> - <-3.5, -1.5> = < -2.5 - (-3.5) , 4.5 -(-1.5) >

2v-u = < 1 , 6 >

This vector is basically i + 6j which is drawn in option D

8 0
3 years ago
Plz help me thank ...
puteri [66]
Answer

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8 0
3 years ago
Read 2 more answers
What is the tangent ratio for ∠A?
tiny-mole [99]

for this case we have to define trigonometric relations of rectangular triangles, that the tangent of an angle is given by the leg opposite the angle on the leg adjacent to the angle. So:

tg (A) = \frac {6} {8} = \frac {3} {4}

Answer:

tg (A) = \frac {3} {4}

8 0
3 years ago
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