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Vilka [71]
3 years ago
11

Help me please............

Mathematics
2 answers:
faltersainse [42]3 years ago
6 0
It would be 6x+40
:)
sp2606 [1]3 years ago
4 0

Answer:

40+6x

Step-by-step explanation:

11+11+9+9=40          x*x*x*x=x           3x+3x =6x bring the 6x down and it will be 6x+40      

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In order for RECT to be a rectangle, what must the value of x be?
Readme [11.4K]

Answer:

x = 21

Step-by-step explanation:

If RECT is a rectangle, each of its interior angles are right angles, 90°. Since ∠RTC is split into two angles, the sum of the two angles must be 90°. (Angles that add to 90° are called complementary angles).

∠RTC = ∠RTE + ∠ETC     Formula for complementary angles

90 = 2x + 6 + 42                Substitute the angles

90 = 2x + 48               Combined like terms to simplify

Now isolate "x" to solve

90 - 48 = 2x + 48 - 48         Subtract 48 from both sides

42 = 2x

42/2 = 2x/2       Divide both sides by 2

x = 21

Therefore x is 21.

6 0
3 years ago
Ji-Hun and Kana are running a marathon. Due to the volume of people running, the starts occur in waves. Kana starts at 9:35 a.m.
iris [78.8K]

Answer:

23.52 miles

Step-by-step explanation:

Let us find the number of miles that they would have run.

Kana starts at 9:35 a.m. and runs at an average rate of 7 mph.

Let the time she has spent so far be t.

Speed is given as:

s = d / t

where d = distance and t = time

=> d = s * t

Therefore, for Kana:

d = 7 * t = 7t _____________(1)

Ji-Hun starts at 10:00 am (25 minutes after Hannah) and runs at an average rate of 8 mph.

25 minutes = 25/60 hour = 0.42 hour

So, his time (compared to Kana's) is t - 0.42.

therefore, for Ji-Hun:

d = 8 * (t - 0.42)

=> d = 8t - 3.36 ____________(2)

Equating (1) and (2):

7t = 8t - 3.36

=> 8t - 7t = 3.36

t = 3.36 hours

Therefore, let us find d:

d = 7 * 3.36 = 23.52 miles

So, Ji-Hun will catch up to Kana after 23.52 miles.

6 0
3 years ago
Lana needs to find the. to find this, she could list. of both numbers, and circle each bumber that appeas in both lists. she sho
strojnjashka [21]
U still need help or nah?
7 0
3 years ago
Whats is 183x194??????????
ella [17]
183 x 194 = 35,502

you could use a calculator or put it into the overlap form
5 0
3 years ago
Read 2 more answers
for a temporary job between semesters you are painting the parking spaces for a new shopping mall with a letter of the alphabet
Nitella [24]
There are 26 letters in the alphabet

9 numbers can be painted

26 * 9 = 234 spaces
6 0
3 years ago
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