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Sonja [21]
4 years ago
12

Please help me with this problem I am lost

Mathematics
2 answers:
Delvig [45]4 years ago
7 0

Answer:

\frac{49}{15}

Step-by-step explanation:

\frac{2}{5} \times \frac{7}{-6} \times -7

\frac{2}{5} \times \frac{7}{-6} \times \frac{-7}{1}

\frac{2 \times 7 \times -7}{5 \times -6 \times 1}

\frac{-98}{-30}=\frac{98}{30}=\frac{49}{15}

tester [92]4 years ago
6 0

Answer:

-3.26 repeating

Step-by-step explanation:

2×7=14

5×(-6) = -30

14/30×(-7)= -3.26 repeating

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Vanessa tried to prove that triangle KLM is congruent to triangle MNK. What is the first error Vanessa made in her proof?
Natali [406]

Answer:

Step-by-step explanation:

Vanessa only established some of the necessary conditions

5 0
3 years ago
Roderick has an Internet service that charges by the hour. This piecewise function shows the cost of the Internet service based
puteri [66]

Answer:

18.75 is the answer

Step-by-step explanation:

since the internet usage is more than 4 hrs, the second equation will be used. that is

cost = (10 + 2.50 (x - 4)) where x is the usage hours.

thus

cost = 10 + (2.5 \times (7.5 - 4)) \\  = 10 + (2.5 \times 3.5) \\  = 10 + 8.75 \\  = 18.75

3 0
3 years ago
Camryn puts $400 into a savings account that earns 6% annually. the amount in her account can
mylen [45]

The exponential function that approximates the amount of money in her account using a weekly growth rate is:

c_w(t) = 400(1.001154)^{\frac{t}{52}}

<h3 />

What is an exponential function?

An increasing exponential function is modeled by:

A(t) = A(0)(1 + r)^t

In which:

  • A(0) is the initial value.
  • r is the growth rate, as a decimal

In this problem, the yearly function is:

c(t) = 400(1.06)^t

Considering that a year has 52 weeks, we have that:

0.06/52 = 0.001154

Hence:

c_w(t) = 400(1.001154)^{\frac{t}{52}}

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

7 0
2 years ago
X^2+2x+2=x^2+2<br> What is the answer to this equation?
Whitepunk [10]

Follow the steps above

3 0
3 years ago
Robin had picked 7 bags of oranges. How many glasses of orange juice could she make if each glass took one-seventh of a bag?
HACTEHA [7]

Answer:

7 Glasses

Step-by-step explanation:

One glass of orange juice needs 1/7 of a bag, she brought 7 bags which all adds up to a full 7 glasses

6 0
3 years ago
Read 2 more answers
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