1answer.
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
melisa1 [442]
3 years ago
14

Which expression is equivalent to −2.6+(−2.9)+(−7.1) ?

Mathematics
1 answer:
lianna [129]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Since each term has a negative, the expression has moved it to the front as multiplication of -1 to each term and grouped it with parenthesis.

You might be interested in
Please help logarithms!
nlexa [21]

Given:

\log_34\approx 1.262

\log_37\approx 1.771

To find:

The value of \log_3\left(\dfrac{4}{49}\right).

Solution:

We have,

\log_34\approx 1.262

\log_37\approx 1.771

Using properties of log, we get

\log_3\left(\dfrac{4}{49}\right)=\log_34-\log_349      \left[\because \log_a\dfrac{m}{n}=\log_am-\log_an\right]

\log_3\left(\dfrac{4}{49}\right)=\log_34-\log_37^2      

\log_3\left(\dfrac{4}{49}\right)=\log_34-2\log_37          [\log x^n=n\log x]

Substitute \log_34\approx 1.262 and \log_37\approx 1.771.

\log_3\left(\dfrac{4}{49}\right)=1.262-2(1.771)

\log_3\left(\dfrac{4}{49}\right)=1.262-3.542

\log_3\left(\dfrac{4}{49}\right)=-2.28

Therefore, the value of \log_3\left(\dfrac{4}{49}\right) is -2.28.

5 0
3 years ago
Find the 5th term of the sequence in which T1=8 and Tn=3t n-1
yan [13]
T_n = 3 * T_(n-1)

Long way (always works!)
T_5 = 3*T_4,
T_4 = 3*T_3
T_3 = 3*T_2
T_2 = 3*T_1

T_5 = 3*3*3*3*T_1 = 81*T_1 = 81*8 = 648!

Short way (sometimes it works!)

T_n = 3^(n-1) * T_1 (this case is a geometric series of ratio-=3)
T_5 = 3^4*8 = 648
6 0
3 years ago
Which of the following is equivalent to cos x?
Otrada [13]

ANSWER

D) sin Y

EXPLANATION

The given triangle is a right triangle.

This implies that that:

x + y = 90 \degree

Then we have

y= 90 - x

Recall that

\cos(x)  =  \sin(90 - x)

But

90 - x = y

When we do the substitution, we get,

\cos(x)  =  \sin(y)

Therefore cos(x) is a equivalent to sin(y).

The correct answer is D.

3 0
4 years ago
Dave rented a limousine for his wife's birthday. The hourly rate is $80. They used the limousine for 4 hours, plus Dave gave the
Pavel [41]
$80 hourly used limousine
80 * .20 = $16 tip

$80 + $16 = $96 <span>he spent hourly charges plus tip

$96 * 4 = $384 total for 4 hours plus tip</span>
7 0
3 years ago
HELP ME PLSSSSSSSSSS
IRINA_888 [86]

Answer:

the last one go to the first one , the first one go to the last one , the secoind go the third one , and the thrid one go to the thrid one sry if i am wrong

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • What is 3 + x/-2 = 10
    10·2 answers
  • HELP. Need to find factored form of the related polynomial.
    11·2 answers
  • (05.02)
    10·1 answer
  • What is the vertex? y=2x^2+28x-8
    13·2 answers
  • BillieÍs monthly cell phone bill includes the cost of cell phone service, 15% tax on the cost of the cell phone service, and a $
    6·1 answer
  • What is the derivative of y with respect to x if y = 2/X4
    15·1 answer
  • The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 2643 miles, with a standard
    13·1 answer
  • A rectangular plot of ground is 5 meters longer than it is wide, It’s area is 20,000 square meters
    9·1 answer
  • Your business partner describes this as a high positive correlation. Is your partner correct? Why or why not? (2 points)
    11·1 answer
  • The balance of Micah's checking account is $645. Micah needs at least $800 in the account to cover his expenses. Write and solve
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!