All categories

3 years ago

6z+43z=78 what does z equal?

Mathematics

1 answer:

Ksju [112]3 years ago

6 0

6z+43z=78
Collect like terms
49z=78
Z=78/49
Z=1.59
Hope this helps!

You might be interested in

You worked from 8:30am - 2:15pm with a 12 hour lunch break. How long did you work?

alexandr402 [8]

5.75 if you don’t count the lunch break because I don’t think a lunch break can be twelve hours because it would’nt even be a shift

5 0

3 years ago

What is the GCF for # 2 2) 2x^2 -20x+32

ioda

so the answer is 2 for the question?

3 0

3 years ago

Wendy is standing 60 feet away from a tree. Her eyes are 5 feet above the ground. She sees a bird hovering above a tree. The ang

Gennadij [26K]

The bird is 17 feet above the tree.

Explanation:

We need to think of this in terms of right triangles. If Wendy is 60 feet from a tree, the base of the right triangle is 60 feet. The height of the tree is the height of the right triangle. The angle of elevation is the one from the ground at her feet to the top of the tree and then to the bird. Let's start with the top of the tree first.

She's 60 feet away, we have the angle of elevation as 25 degrees, and we are looking for the height of the tree. In regards to the angle, the base of 60 is adjacent, and the height of the tree is opposite. The tangent ratio is height / base.

Let x be the height of the tree.

So,

$tan (25) = \frac{x}{60}$

$60 tan(25) = x\\\\x = 27.9 feet$

x is approximately 28 feet

Since, Wendy's eyes are 5 feet above the ground, the height of the tree becomes

28 + 5 = 33 feet

For bird

Let y be the height of the bird in the air

$tan(37) = \frac{y}{60} \\\\60 tan(37) = y\\\\y = 45.2 feet$

y is approximately 45 feet

Since, Wendy's eyes are 5 feet above the ground, the height of the tree becomes

45 + 5 = 50 feet

To know how far above the tree that bird is

50 - 33 = 17 feet

Therefore, the bird is 17 feet above the tree.

3 0

3 years ago

A store sells 1/4 pound of beef for $0.75. If u are having a party and need 6 pounds of beef for hamburgers,using the unit rate,

hodyreva [135]

1/4 pound beef, b = $0.75

=》 6 pounds beef = (6)/ (1/4) × b

=》 6 pounds beef = 24 × $0.75 =$18.00

8 0

3 years ago

1 point

weeeeeb [17]

Answer:

The answer is 0.71 per ounce.

Step-by-step explanation:

You can use proportions to solve this.

$\frac{89.95 dollars}{64lb} = \frac{1 dollar}{x} \\64 * 1 = 64\\89.95 * x = 89.95x\\\\\frac{64}{89.95} = \frac{89.95x}{89.95}\\\\0.7115063924 = x\\Which when rounded to the nearest hundredths is:\\0.71$

5 0

2 years ago