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3 years ago

Solve. 3(5z + 7) = 33

Mathematics

2 answers:

Alex_Xolod [135]3 years ago

5 0

Answer:

z = 4/5

Step-by-step explanation:

Ivenika [448]3 years ago

3 0

Answer:

z = 4/5

Step-by-step explanation:

3(5z + 7) = 33

Divide each side by 3

3/3(5z + 7) = 33/3

5z+7 = 11

Subtract 7 from each side

5z+7-7 = 11-7

5z = 4

Divide by 5

5z/5 = 4/5

z = 4/5

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OK i need big help!!!! And it's really easy!

Ede4ka [16]

The second option!! the addition one :))

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3 years ago

What is the decimal equivalent of 3/9?

Nitella [24]

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for the future:

$\dfrac{1}{9}=0.\overline{1}\\\\\dfrac{2}{9}=0.\overline{2}\\\\\dfrac{3}{9}=0.\overline{3}\\\vdots\\\\\dfrac{n}{9}=0.\overline{n}\ for\ n\in\{1;\ 2;\ 3;\ ...;\ 9\}$

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3 years ago

Consider the equation 9x+3=x−1. Squaring the left side and simplifying results in _______. Squaring the right side and simplify

bixtya [17]

Answer:

The first blank is 81 $x^{2}$ +9=x-1

The second blank is 9x+3=x^2-1

Step-by-step explanation:

For the first part, you must set up the equation (9x+3)^2 then you must multiply the exponent to the inside exponents $9^{2} x^{2}$ + $3^{2}$ next, simplify.

81 $x^{2}$ +9=x-1

For part two, set up equation. $x^{2} -1^{2}$ Then simplify 9x+3= $x^{2} -1$

6 0

3 years ago

You are building a house and are making a drawing of the kitchen. the sink is 3 feet away from the dishwasher, and the sink is 8

Natasha_Volkova [10]

Consider the triangle with vertices S (sink), D (dishwasher) and F (fridge). From the conditions data SD=3, SF=8 and ∠S=48°.

Use the cosine theorem to find unknown distance:

$FD^2=SD^2+SF^2-2SD\cdot SF\cdot \cos S$ ,

$FD^2=3^2+8^2-2\cdot 3\cdot 8\cdot \cos 48^{\circ},\\ FD^2=9+64-48\cdot 0.67,\\ FD^2=40.84, \\ FD=\sqrt{40.84}, \\ FD=6.39$ feet.

Then the distance between dishwasher and fridge is 6.39 feet.

Are these dimensions reasonable is up to kitchen owner))

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3 years ago

A trampoline costs $220 and the sales tax is 6.25%. What is the total cost.

Schach [20]

Answer:

233.75

Step-by-step explanation:

if 220 is 100% of the number we need to know how much 6.25% is so we would multiply 220 and 6.25 together then divide by 100 and we would get 13.75, so 13.75 id 6.25% of 220. We would then add 220 and 13.75 together and get 233.75

5 0

3 years ago