answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bagirrra123 [75]
2 years ago
12

Izzie recently took a math test where each correct answer (a) was worth 7.8 points. She also correctly answered a bonus question

worth 15 points. Using the equation 7.8a + 15 = 77.4, how many questions on the test did Izzie answer correctly?
A) 5
B) 8
C) 12
D) 9
PLEASE HELP FAST!!!!!
Mathematics
1 answer:
kvasek [131]2 years ago
4 0
77.4-15=62.4            62.4/7.8=8, therefore the answer is 9 since the bonus question is later added.
You might be interested in
Si un conductor llena su tanque con $600 y recorre 250 kilómetros, ¿Cuántos kilómetros podrá recorrer con $350 de combustible? (
LekaFEV [45]

Answer:

145.83 kilómetros.

Step-by-step explanation:

Si un conductor llena su tanque con $600 y recorre 250 kilómetros, para determinar cuántos kilómetros podrá recorrer con $350 de combustible se debe realizar el siguiente cálculo:

600 = 250

350 = X

350 x 250 / 600 = X

87,500 / 600 = X

145.83 = X

Así, con $350 de combustible se podrán recorrer 145.83 kilómetros.

4 0
2 years ago
Raymond just got done jumping at Super Bounce Trampoline Center. The total cost of his session was \$43.25$43.25dollar sign, 43,
Elodia [21]

Answer:

29 minutes

Step-by-step explanation:

Given

Total = \$43.25

Entrance\ Fee = \$7

Per\ Minute = \$1.25

Required

Determine the number of minutes (t) that he was on the trampoline.

This can be expressed as:

Total\ Payment = Entrance\ Fee + Amount\ per\ minute * t

Where t represents the number of minutes

Substitute values for Total, Entrance Fee and Amount per minute

43.25 = 7 + 1.25 * t

43.25 = 7 + 1.25t

Solving further to get the value of t, we have:

1.25t = 43.25 - 7

1.25t = 36.25

t = 36.25/1.25

t = 29

3 0
2 years ago
Read 2 more answers
The function f(x) = xπ−−√ gives the diameter, in inches, of a proposed spherical sculpture with a surface area of x square inche
natka813 [3]

Answer:

The average rate of change of f(x) = 3.14 inches⁻¹

The change in f(x) = 49.32 in

Step-by-step explanation:

The surface area of the spherical sculpture = x and its diameter f(x) = πx.

The average rate of change of f(x) as x changes is df(x)/dx = π = 3.14

Now the change in diameter Δf(x) = df(x) = (df(x)/dx)dx = πdx  

dx = Δx = 28.3 in² - 12.6 in² = 15.7 in²

df(x) = π × 15.7 = 49.32 in

3 0
2 years ago
Andrew earns $45,300 in taxable income annually, and pays federal income taxes of $5,345.40. What is Andrew's net federal income
jeka94
5345.40 is what percent of 45300
5345.40=45300x
0.118=x --divide both sides by 45300

andrews net federal income tax rate is C) 11.8%
3 0
2 years ago
Read 2 more answers
Atley, Bradley, Cursen, and Drake are the married names of Kermit, Leonard, Marlene, and Norma. Read the clues to find each pers
vodka [1.7K]
This is how the chart will look like:
              Kermit          Leonard           Marlene         Norma
Atley

Bradley

Cursen 

Drake

1. Drake is Bradley's sister.
2. Cursen is Atley's brother
3. Norma and Drake are not related
<span>4. Kermit is a year older than Bradley
</span>
Drake is a girl (1), but she is not related to Norma(3), So she is Marlene.
1) MARLENE DRAKE

Drake and Bradley are related; Norma is not related to them(3). Norma can either be Atley or Cursen. But, Cursen is Male. So, Norma is NORMA ATLEY

Remaining family names are Bradley and Cursen. Kermit is not a Bradley, so he is KERMIT CURSEN. That leaves LEONARD BRADLEY.

 
5 0
2 years ago
Read 2 more answers
Other questions:
  • What percent of 84 is 12?
    14·2 answers
  • The volume of a cube depends on the length of its sides. This can be written in function notation as v(s). What is the best inte
    5·2 answers
  • All clothing is being marked down 15%. Which expression represents the new retail price?
    8·2 answers
  • The graph of y=|x|y=∣x∣y, equals, vertical bar, x, vertical bar is reflected across the xxx-axis and then scaled vertically by a
    10·2 answers
  • Brad says that if a second number is 125% of the first number, then the first number must be 75% of the second number. Is he cor
    14·1 answer
  • After placing an equation into his calculator Rob got the following table. He then determine that X=6 when f (x) = -4 is he corr
    9·1 answer
  • John drove from station A to station B a distance of 224 miles. On his way back, he increased his speed by 10 mph. If the journe
    10·1 answer
  • A soundproofing tile is made of 8 identical solid right pyramids with square bases. The length of the whole tile shown is x inch
    13·2 answers
  • If speed varies inversely as the time it takes to drive and Kris takes 5 hours driving at 55 mph, what speed will Martin need to
    14·1 answer
  • Which is the graph of the linear inequality y &lt; 3x + 1? On a coordinate plane, a solid straight line has a positive slope and
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!