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3 years ago

What is the value of the expression below when z = 10 and w = 4? 2z - 3w

Mathematics

2 answers:

Yanka [14]3 years ago

7 0

Answer:

2(10)-3(4)=20-12=8

the answer is 8.

Step-by-step explanation:

Elan Coil [88]3 years ago

5 0

Answer:

2(10) - 3(4) = 8

Step-by-step explanation:

2 * 10 is 20

3 * 4 is 12

so 20 - 12 is 8

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Solve. − 2 5 x − 9 < 9 10

Mademuasel [1]

Step-by-step explanation:

okay so -25 • -9 = 9+10

225 = 9+10

225 = 19

19. 19

= 11.8

8 0

1 year ago

See comment for what I need

Roman55 [17]

Answer:

I already sent u the link from there, even tho, they deleted my question, but yh i set the title as well incase u needed it! Good luck

Step-by-step explanation:

4 0

2 years ago

A post is supported by two wires (one on each side going in oppositedirections) creating an angle of 80° between the wires. The

Vladimir [108]

Using the Sine rule,

$\frac{\sin A}{A}=\frac{\sin B}{B}=\frac{\sin C}{C}$ $\begin{gathered} \text{Let A = 14m,} \\ Substituting the variables into the formula,Where the length of the wires are, AP = xm and BP = ym[tex]\begin{gathered} \frac{\sin80^0}{14}=\frac{\sin40^0}{x} \\ \text{Crossmultiply,} \\ x\times\sin 80^0=14\times\sin 40^0 \\ Divide\text{ both sides by }\sin 80^0 \\ x=\frac{14\sin40^0}{\sin80^0} \\ x=9.14m \end{gathered}$

Hence, the length of wire AP (x) is 9.14m.

For wire BP (y)m,

Sum of angles in a triangle is 180 degrees,

$A^0+P^0+B^0=180^0$ $\begin{gathered} \text{Where A}^0=\text{ unknown,} \\ P^0=80^0\text{ and,} \\ B^0=40^0 \\ A^0+80^0+40^0=180^0 \\ A^0+120^0=180^0 \\ A^0=180^0-120^0 \\ A^0=60^0 \end{gathered}$

Using the side rule to find the length of wire BP,

$\begin{gathered} \frac{\sin 60^0}{y}=\frac{\sin 80^0}{14} \\ \text{Crossmultiply,} \\ y\times\sin 80^0=14\times\sin 60^0 \\ \text{Didive both sides by }\sin 80^0 \\ y=\frac{14\times\sin 60^0}{\sin 80^0} \\ y=12.31m \end{gathered}$

Hence, the length of wire BP (y) is 12.31m

Therefore, the length of the wires are (9.14m and 12.31m).

4 0

8 months ago

Help please :)))))))))))))

natali 33 [55]

Answer:

D is the correct answer

if you want explanation you can comment down

6 0

2 years ago

Solve this equation please ! −2 − (+7) = ?

olga55 [171]

-2 - (+7) =
-2 - 7 =
-9
<3

5 0

2 years ago