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prisoha [69]
3 years ago
14

HELP I HAVE NO IDEA HOW TO FIGURE THIS OUT

Mathematics
1 answer:
Papessa [141]3 years ago
7 0

Answer:

I can narrow it down to 22 or 29

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100 POINTS!!!!!!! I WILL GIVE BRAINLIEST!
abruzzese [7]

Answer:

  • 8.4 miles

Step-by-step explanation:

Let the speed in the morning be s, then in the evening it is s - 4

<u>The distance is equal both directions:</u>

  • 45 min *s = 1 hr 10 min *(s - 4)

<u>Time in hours:</u>

  • 45*1/60*s = (1 + 10*1/60)(s - 4)
  • 3/4s = 7/6s - 7/6*4

<u>Multiply all terms by 12 to clear fraction:</u>

  • 9s = 14s - 56
  • 5s = 56
  • s = 56/5
  • s= 11.2 mph

<u>The distance is:</u>

  • 3/4*11.2 = 0.75*11.2 = 8.4 miles
3 0
3 years ago
1. A student invests $500 in a savings account that earns 4% interest per
bixtya [17]

Answer:

The equation can be used to determine the amount of money S(t)  that her savings account has after t years is S(t)=500(1.04)^t

Step-by-step explanation:

A student invests $500 in a savings account

Principal = $500

Rate of interest = 4% = 0.04

We are supposed to find equation can be used to determine the amount of money S(t)  that her savings account has after t years

Formula : A=P(1+r)^t

Where A is the amount after t years =S(t)

t = time

r = rate of interest in decimals =0.04

P = Principal=500

Substitute the value in the formula :

So, S(t)=500(1+0.04)^t

S(t)=500(1.04)^t

Hence The equation can be used to determine the amount of money S(t)  that her savings account has after t years is S(t)=500(1.04)^t

6 0
3 years ago
Complete the two-column proof.
GuDViN [60]

1.QUAD is an isosceles trapezoid 1. Given

2. QD = UA 2. Opposite legs of an isosceles trapezoid are equal

3. QU = QU 3. Reflexive

4. QA = UD 4. Diagonals of an isosceles trapezoid are equal.

5. ΔUAQ = ΔQDU 5. SSS

6. ∠UAQ = ∠QDU 6. CPCTE

3 0
3 years ago
What is the equation of the line that passes through (-2, 2) and (1, -4)?
MrMuchimi

Answer:

y=−2x−2

Step-by-step explanation:

i hope it helps

have a good day ^_^

5 0
2 years ago
An employee at a clothing store makes a base salary of $2,800 a month plus 6.75% of the sales that they make. The function E(s)=
Gennadij [26K]

Answer:

3,340$

Step-by-step explanation:

e(8000)=.0675(8000)+2800

e(8000)=540+2800

e(8000)=3340

4 0
3 years ago
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