All categories

3 years ago

3.4-2.8d+2.8d-1.3. Combine like terms to simplify the expression

Mathematics

1 answer:

tekilochka [14]3 years ago

8 0

3.4 - 2.8d + 2.8d - 1.3 = 3.4 - 1.3 - 2.8d + 2.8d = 3.4 - 1.3 = 2,1

You might be interested in

Simplify (8x^2 - 1 + 2x^3) - (7x^3 - 3x^2 + 1).

Elenna [48]

Answer:

31x^2-2 is the answer....

Step-by-step explanation:

7 0

3 years ago

Whoever checks my work and tell what I did wrong and the right answer will

gulaghasi [49]

Answer:

See below

Step-by-step explanation:

I believe that you only had to do letters F, H, and J. In that case, let's go over each one!

F: For isolating $d_{1}$ , we need to get rid of the 1/2 first. Let's multiply each side by 2:

$2*m = 2*\frac{1}{2}(d_{1}+ d_{2}) \\2m = d_{1}+ d_{2}$

After this, we just subtract $d_{2}$ from each side to get $d_{1}=2m- d_{2}$ . Dark Blue is correct! Let's now plug in those numbers below:

$d_{1}=2(10)- 13 = 20-13=7$

G: Let's isolate the vw^2 on one side by subtracting y from each side:

$vw^{2} +y-y=x-y\\vw^{2}=x-y$

Let's now divide each side by v, then put each side under a square root to get our final answer:

$\frac{vw^2}{v} = \frac{x-y}{v}\\ w^2 = \frac{x-y}{v}\\\sqrt{w^2} = \sqrt{\frac{x-y}{v}} \\w=\sqrt{\frac{x-y}{v}}$

Orange is correct! Again, let's solve the problem underneath:

w= $w=\sqrt{\frac{38-(-7)}{5}} = \sqrt{\frac{38+7}{5}} = \sqrt{\frac{45}{5}}=\sqrt{9}=3$

H: This one has some stuff that we haven't worked with quite yet (like terms), but our approach is the same: isolate c on one side of the equation.

$2a-2a+3c=17a-2a+21\\3c = 15a+21\\\frac{3c}{3} = \frac{15a+21}{3}\\c = \frac{15a}{3}+ \frac{21}{3} \\c = 5a+7$

Purple is correct! Let's solve the problem:

$c = 5(\frac{16}{5})+7 = 16+7 = 23$

7 0

3 years ago

Find the degree of the monomial. 3x^8y^4 A.4 B.8 C.3 D.12

ioda

There are 3 degrees
in this monomial

8 0

4 years ago

It took jaivin 18 minutes to jog 4 laps . how many minutes did it to jog each lap at this rate?

Lina20 [59]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Is 0.36279979176191 rational or irrational

solniwko [45]

Answer is: Irrational because if the answer doesn’t repeat for an example 0.392827263, it’s irrational if it does repeat like this 0.3434343434 it’s rational! Hoped this helped!!

5 0

3 years ago