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Monica [59]
2 years ago
15

Brian scored 120 on his test the first time he took the test. The second time he took the test,

Mathematics
2 answers:
Brums [2.3K]2 years ago
6 0

Answer:

b. 25%

Step-by-step explanation:

(new - old)/ old * 100%

150 - 120 = 30 ... 30/120 = .25 * 100% = 25%

Kruka [31]2 years ago
5 0

Answer:

25% increase

Step-by-step explanation:

Take the new amount and subtract the original amount

150-120

30

Divide this by the original amount

30/120

1/4

.25

Multiply by 100%

25%

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What time what equals 10
lions [1.4K]
5*2 = 10
10*1 = 10

Hope I helped
6 0
3 years ago
Write an exponential function in the form y=ab^x that goes through points (0,14) and (3,3024).
Dmitrij [34]

Answer:

y = 14 (6)^{x}

Step-by-step explanation:

For an exponential function of the form y = ab^{x}

Use the given points to find a and b

Using (0, 14 ), then

14 = ab^{0} ( b^{0} = 1 ) , thus

a = 14

y = 14b^{x}

Using (3, 3024 ) , then

3024 = 14 b³ ( divide both sides by 14 )

216 = b³ ( take the cube root of both sides )

b = \sqrt[3]{216} = 6 , thus

y = 14 × 6^{x} ← exponential function

5 0
3 years ago
Which of the following is a solution for the equation 7x+ 21 = 105?<br> 105<br> 15<br> 84<br> 12
lisov135 [29]
The correct answer is 12
7 0
3 years ago
Read 2 more answers
Here please helppppppppppppp
skelet666 [1.2K]

Answer:

  • Part 2 - ∠EGF = 105°
  • Part 3 - ∠D = 65
<h3>________________________________________________</h3>

Step-by-step explanation for Part-2:

<u>We know that:</u>

  • ∠EFG = 32°
  • ∠AEG = 137°
  • ∠EFG + ∠FGE + ∠GEF = 180°

<u>Work:</u>

  • ∠EFG + ∠FGE + ∠GEF = 180°
  • 32 + ∠FGE + (180 - 137) = 180°
  • => 32 + ∠FGE + 43 = 180°
  • => 75 + ∠FGE = 180°
  • => ∠FGE = 180 - 75
  • => ∠FGE = ∠EGF = 105°

Hence, the measure of ∠EGF is 105°.

<h3>________________________________________________</h3>

Step-by-step explanation for Part-3:

<u>We know that:</u>

  • CD = CA
  • This triangle is an isosceles triangle.
  • ∠D = ∠A

<u>Work:</u>

  • 50 + ∠D + ∠A = 180
  • => ∠D + ∠D = 130
  • => 2∠D = 130
  • => ∠D = 130/2
  • => ∠D = 65

Hence, the measure of ∠D is 65°

<h3>________________________________________________</h3>
7 0
2 years ago
Which number is equal to 7 (3.5×10^4) written in scientific notation
seraphim [82]
The correct answer is:  [B]:  " 2.45 * 10⁵ " .
___________________________________________________________
<u>Note</u>:  

7 * 3.5 =   24.5 ;

24.5 * 10⁴ = 2.45 * 10⁵ .
___________________________________________________________
6 0
3 years ago
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