All categories

2 years ago

Plz help brainiest to the correct answer!

Mathematics

2 answers:

Advocard [28]2 years ago

8 0

$\\ \sf{:}\dashrightarrow \dfrac{1}{4}(-12)=-3$

$\\ \sf{:}\dashrightarrow \dfrac{-1}{3}(39)=-13$

$\\ \sf{:}\dashrightarrow -4/5(-75)=-4(-15)=60$

$\\ \sf{:}\dashrightarrow (-2/5)(-3/4)=6/20=3/10$

$\\ \sf{:}\dashrightarrow 8/3(-42)=-14(8)=-112$

zysi [14]2 years ago

5 0

Answer is highlighted in brown. Hope this helps.

You might be interested in

At a local clothing store, Morgan finds they are having a storewide 40% off sale. She also has a $15 coupon which applies to her

LuckyWell [14K]

Morgan should first take the 40% off then apply the $15 coupon

Lets say her total was $150.

If you take the 40% off first, you get $90

150 * .6 = 90 (since you are taking off 40% you are still paying the rest of the 60% so you can just save extra steps by multiplying by .6 and not .4)

Now you subtract 15 from that value.

90 - 15 = 75 If Morgan takes the 40% off first and then applies the $15 dollar coupon, she has to pay $75.

If she applies the $15 coupon first, her total before the 40% is $135

150 - 15 = 135

The total will come out to be $81

$135 * .6 = 81

If Morgan takes the discount first before applying the coupon she has to pay less and saves the most money.

5 0

3 years ago

The average weight of a group of seven boys is 56 kg. The individual weights (in kg) of 6 of them are 52,57,55,60,59 and 55. fin

garik1379 [7]

Answer:

54 kg

Step-by-step explanation:

Total weight of 7 boys is 392 kg. And other 6 boys total weight is 338 kg.

So the 7th boy's weight is (392-338)=54 kg

7 0

3 years ago

Read 2 more answers

Find all values of x in the interval [0,2π] that satisfy the equation sin2x=cosx. enter your answers as a list of numbers separa

yuradex [85]

$\sin(2x) = \cos(x) \\ 2 \sin(x) \cos(x) = \cos(x) \\ \cos(x) (2 \sin(x) - 1) = 0$
so
$\cos(x) = 0 > > > x = \frac{\pi}{2} + k\pi \\ \sin(x) = \frac{1}{2} > > > x = \frac{\pi}{6} + 2k\pi \\ or \: x = \frac{5\pi}{6} + 2k\pi$
$x = \frac{\pi}{2} or \frac{3\pi}{2} \\ x = \frac{\pi}{6} or \frac{5\pi}{6}$

6 0

3 years ago

Y=e^x how do I solve this

kolezko [41]

If you're trying to solve for x, keep in mind the ln (natural log) of e is 1. So take the natural log of both sides, which will give you ln Y = ln e^x. The ln and e essentially cancel out, so you're left with x = ln Y.

6 0

3 years ago

Please help me. I couldn't find the answer. I need prove how I got the answer as well

Naya [18.7K]

Answer:

13 car lengths

Step-by-step explanation:

65 (1/10) = 6.5

6.5 (2) = 13

4 0

2 years ago

Read 2 more answers