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rosijanka [135]
3 years ago
7

What is 2 (3x+7) = 4

Mathematics
2 answers:
KIM [24]3 years ago
7 0

Answer:

x = -5/3

Step-by-step explanation:

2(3x+7) = 4

6x + 14 = 4

Subtract 14 from both sides,

6x = 4-14

6x = -10

Divide by 6 on both sides,

x = -10/6 = -5/3

Nataly_w [17]3 years ago
7 0

Answer:

x = -6/10

Step-by-step explanation:

First distribute so you get 6 x + 14 = 4

Then subtract by 14 so you get 6 x = -10

And divide by 6 to get x = - 6/10

2 (3x+7) = 4

6 x + 14 = 4

6 x = -10

x = -6/10

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Alex is feeling stressed this morning. He did not get enough sleep because a dog barked most of the night. The dog barked from 1
inna [77]

Answer:

Poor Alex, I know how they feel, I got a dog myself.

The amount of time between

11:41 pm to 12:09 am is

19 minutes (to 12 am, 60 minutes to next hour) + 9

which is 28 minutes for the first dog barking session

the second time is 35 minutes,

using same method as before.

adding the two separte barking sessions we get

35+28= 63 minutes

which is equivelant to 1 hour and 3 minutes.

In conclusion the dog barks for 1 hour and 3 minutes in total.

7 0
2 years ago
A Pizza factory has come out with two kinds of pizzas.A square pizza of side 26 cm costs AED 80 and a circular pizza of diameter
DiKsa [7]

Answer:

Square pizza

Step-by-step explanation:

To obtain which pizza is the best buy:

Cost of square pizza :

AED 80

side length, s = 26cm

Area of square, A = s²

A = 26² = 676 cm²

1 AED of square pizza gives : 676 / 80 = 8.45 cm²

Cost of circular pizza :

AED 80

Radius, r = 28cm

Area of circle, A = πr²

A = 22/7 * 14 * 14 = 22 * 2 * 14 = 616 cm²

1 AED of circular pizza gives : 616 / 80 = 7.7cm²

Hence, square pizza is the better buy ;

8.45cm² > 7.70 cm²

4 0
3 years ago
Please help!!! The last one. Word answer
liberstina [14]

Often, variability is most usefully expressed in the same units as the original data. That's what <em>standard deviation</em> (square root of variance) does. In situations where that is the case, the variance is useful only for getting to the value of standard deviation.

4 0
3 years ago
Solve for x, given the equation Square root of x-5+7=11
denis-greek [22]

\sqrt{x-5+7} = 11\\x-5+7 = 11^2\\x-5+7 = 121\\x + 2 = 121\\x = 119

Check the answer:

\sqrt{119-5+7} \\\sqrt{114+7} \\\sqrt{121} \\11

This answer is correct,

x = 119

6 0
3 years ago
Solve x2 - x - 5/2 = 0 using the quadratic formula.
stich3 [128]

Answer:

x= 1±\sqrt{11} over 2

6 0
3 years ago
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