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
Natali [406]
3 years ago
13

Combine like terms to create an equivalent expression. 3.4-2.8d+2.8d-1.33.4−2.8d+2.8d−1.3

Mathematics
1 answer:
zysi [14]3 years ago
3 0

Hey there!

Let's combine like terms!

First, let's write them together, like so:

-2.8d+2.8d-2.8d+2.8d-1.33+3.4-1.33

And now we can see that -2.8d and 2.8d cancel out:

-2.8d+2.8d-1.33+3.4-1.33

And they cancel out again:

-1.3+3.4-1.33

Now all we have to do is add the numbers together:

0.77

Hope it helps!

**GraceRosalia **

BRAINLIEST \\PLEASE\\AND\\GOOD\\LUCK\\WITH\\YOUR \\STUDIES! :-)

You might be interested in
Write (2/3)^2 in expanded form,​
PtichkaEL [24]

Answer:

4/9, or 0.4∞

but 0.4∞ has a repeating decimal, so the expanded form is ∞ also

8 0
3 years ago
Please can someone help me on these? solve this equation by factorising: 2x^2 + 5x + 2 = 0
slavikrds [6]
2x^2 + 5x + 2 = 0\\
2x^2+4x+x+2=0\\
2x(x+2)+1(x+2)=0\\
(2x+1)(x+2)=0\\
x=-\frac{1}{2} \vee x=-2

x^2-4x+1=0\\
x^2-4x+4-3=0\\
(x-2)^2=3\\
x-2 =\sqrt3 \vee x-2=-\sqrt3\\
x=2+\sqrt3 \vee x=2-\sqrt3
7 0
3 years ago
6. A plumber charges $45 for travel and $60 per hour. The cost for h hours can be found using this
arsen [322]

Hope This Helps You!!!

Have a great day!!!

7 0
3 years ago
What should I buy? A study conducted by a research group in a recent year reported that of cell phone owners used their phones i
Llana [10]

Answer:

The probability that seven or more of them used their phones for guidance on purchasing decisions is 0.7886.

<em />

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>What should I buy? A study conducted by a research group in a recent year reported that 57% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 14 cell phone owners is studied. Round the answers to at least four decimal places. What is the probability that seven or more of them used their phones for guidance on purchasing decisions? </em>

We can model this as a binomial random variable, with p=0.57 and n=14.

P(x=k)=\dbinom{n}{k} p^{k}q^{n-k}

a) We have to calculate the probability that seven or more of them used their phones for guidance on purchasing decisions:

P(x\geq7)=\sum_{k=7}^{14}P(x=k)\\\\\\

P(x=7)=\dbinom{14}{7} p^{7}q^{7}=3432*0.0195*0.0027=0.1824\\\\\\P(x=8) = \dbinom{14}{8} p^{8}q^{6}=3003*0.0111*0.0063=0.2115\\\\\\P(x=9) = \dbinom{14}{9} p^{9}q^{5}=2002*0.0064*0.0147=0.1869\\\\\\P(x=10) = \dbinom{14}{10} p^{10}q^{4}=1001*0.0036*0.0342=0.1239\\\\\\P(x=11) = \dbinom{14}{11} p^{11}q^{3}=364*0.0021*0.0795=0.0597\\\\\\P(x=12) = \dbinom{14}{12} p^{12}q^{2}=91*0.0012*0.1849=0.0198\\\\\\P(x=13) = \dbinom{14}{13} p^{13}q^{1}=14*0.0007*0.43=0.004\\\\\\

P(x=14) = \dbinom{14}{14} p^{14}q^{0}=1*0.0004*1=0.0004\\\\\\

P(x\geq7)=0.1824+0.2115+0.1869+0.1239+0.0597+0.0198+0.004+0.0004\\\\P(x\geq7)=0.7886

7 0
3 years ago
alex purchased 20,000 for a new car. The cars value depreciates 7.25% each year. What will be the value of the car five years af
Ugo [173]
The answer would be 18550$. you would find 7.25% of 20000, multiply it by 5, then subtract it from 20000 to get 18550$.
8 0
4 years ago
Other questions:
  • First, rewrite 9/10 and 23/25 so that they have a common denominator.
    15·2 answers
  • Translate the following into an algebraic expression:
    10·1 answer
  • Write y=6x-4 in standard form
    12·1 answer
  • Compare the values of the underlined digits. <br> 2,000 and 200
    7·1 answer
  • Can someone please help? im really confused.
    12·1 answer
  • What is the LCM of 2,7
    9·2 answers
  • What is the slope<br>1/4<br>4<br>-2<br>-3​
    14·2 answers
  • Find the value of x PLEASE EXPLAIN
    10·2 answers
  • What is the rate of change (slope/m) of the linear function that has a graph that passes through the
    14·1 answer
  • Its in the photo, please get done fast
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!