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2 years ago

What is the value of 7

Mathematics

1 answer:

maw [93]2 years ago

8 0

7 can be written as :-

7 + 0 = 7

7 - 0 = 7

7 × 1 = 7

7 ÷ 1 = 7

7¹ = 7

_____

Hope it helps ⚜

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The BJ Electrical Company needs to hire master electricians and apprentices for a one week project. Master electricians receive

Stells [14]

Answer:

The BJ Electrical Company

The BJ Electrical Company should hire:

8 master electricians and

22 apprentices

in order to accomplish the project and still meet the contract safety requirements.

Step-by-step explanation:

Number of workers needed = 30

Class of workers:

Master electrician, with per week salary = $750 per worker

Apprentices, with per week salary = $350 per worker

Number of inspection hours required from each master electrician = 3 hours

Total inspection hours for the project = 25 hours

Average number of master electricians needed = 25/3 = 8.333 = 8

Number of each type of worker needed:

Master electricians = 8

Apprentices = 22 (30 - 8)

Cost to be incurred for workers:

Master electricians = $6,000 (8 * $750)

Apprentices = 7,700 (22 * $350)

Total labor cost = $13,700

5 0

3 years ago

If 6x-4 is 11 less than 25,what is the value of 9x

sashaice [31]

Answer:

Step-by-step explanation:

If 6x-4 is 11 less than 25, what is the value of 9x can be rewritten as:

6x-4=25-11, what is the value of 9x?

Let's solve for x first by using the given information: 6x-4=25-11

1. 6x-4=25-11

2. 6x-4=14

3. (isolate x by adding 4 on both sides) 6x=18

4. x=3

The question asks for the value of 9x. Since we know x=3...

9x=9 times 3=27

9x=27

6 0

3 years ago

PLEASEEEEEE HELP <br> Given: △ABC, D∈AC<br> m∠BDC=m∠ABC<br> AD=7, DC=9<br> Find: BC, BD/BA

Sergio [31]

Answer:

Step-by-step explanation:

Given: △ABC, D∈AC , m∠BDC=m∠ABC , AD=7, DC=9.

Solution: Let BC=x, From the given figure and the given information, it can be seen that △ABC is similar to ΔBDC by AA rule, thus using the proportionality theorem, we get

$\frac{AC}{BC}=\frac{BC}{DC}$

⇒ $\frac{16}{x}=\frac{x}{9}$

⇒ $x^{2}=144$

⇒ $x=12$

⇒BC=12

Now, calculate the similarity scale,

k= $\frac{AC}{BC}$

= $\frac{16}{12}=\frac{4}{3}$

Therefore, $\frac{BA}{BD}=\frac{4}{3}$

⇒ $3BA=4BD$

⇒ $BA=\frac{4}{3}BD$

3 0

3 years ago

In circle R with QRS=90 and QR= 3 units find the length of arc QS round to the nearest hundredth

luda_lava [24]

Hello, I Am BrotherEye

Answer:

27.92 units

Step-by-step explanation:

Radius (qr) = r = 16 units

<QŘS = θ = 82°

Length of an arc = (Θ / 360) * 2πr

L = (θ / 360) *2πr

L = (82 / 360) * 2π * 16

L = 0.2777 * 100.53

L = 27.917 units

L = 27.92 unit

Best Of Luck

BrotherEye

6 0

3 years ago

Hey, can you help me out here (please)?

FinnZ [79.3K]

In the x quarts of 2% fat milk, there is 0.02x quarts of fat.
in the y quarts of 4% fat milk there is 0.04y quarts of fat.
together, there is (x+y) quarts of milk, and 0.24 quarts of fat.
the equations are:
x+y=9
0.02x+0.04y=0.24
multiply the first equation with 0.02: 0.02x+0.02y=0.18
subtract this new equation from equaition 2 to eliminate x:
0.04y-0.02y=0.24-0.18
0.02y=0.06
y=3
x=9-3=6
x is twice as much as y.
He used twice as much as the 2% fat milk than the 4% fat milk.
so the first choice is the correct answer.

8 0

3 years ago

What is the value of 7​

What is the value of 7