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3 years ago

What is the value of x? (7x – 8)° you 62°

Mathematics

1 answer:

Leni [432]3 years ago

4 0

Answer:

x=18

Step-by-step explanation:

180=62+(7x-8)

solve

x=18

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The dimensions of a closed rectangular box are measured as 97 cm, 67 cm, and 34 cm, respectively, with a possible error of 0.2 c

Dahasolnce [82]

Answer:

The maximum error in calculating the surface area of the box is $158.4 \:cm^2$ .

Step-by-step explanation:

Differentials are infinitely small quantities. Given a function $y=f(x)$ we call $dy$ and $dx$ differentials and the relationship between them is given by,

$dy=f'(x) \:dx$

If the dimensions of the box are $l$ , $w$ and $h$ , its surface area is $A=2(wl+hl+hw)$ and

$dA=\frac{\partial A}{\partial l}dl+\frac{\partial A}{\partial w}dw+\frac{\partial A}{\partial h}dh\\\\dA=2(w+h)dl+2(h+l)dw+2(w+l)dh$

To find the largest error in the surface area, we therefore use $dl=0.2, dw=0.2, dh=0.2$ together with $l=97, w=67,h=34$

$dA=2(w+h)dl+2(h+l)dw+2(w+l)dh\\\\dA=2(67+34)\cdot 0.2+2(34+97)\cdot 0.2+2(67+97)\cdot 0.2\\\\dA=158.4 \:cm^2$

An error of 0.2 cm in each dimension could lead to an error of $158.4 \:cm^2$ in the calculated surface area.

3 0

3 years ago

What is the probability of spinning the spinner and the arrow landing on the number ‘1’ and then spinning it a second time and i

Radda [10]

Answer:

There isn't a picture, but i'm guessing they are on opposite ends. If so, it would be 50-50.

Step-by-step explanation:

no picture;;

4 0

4 years ago

This equation shows how the total cost of visiting the art museum as a member is related to the number of visits c= v+7. The var

gulaghasi [49]

Answer:

Step-by-step explanation:

the amount of visits given by the problem is:

$v=10$

and we have that the equation that relates the number of visits with the total cost is:

$c=v+7$

where $c$ is the total cost for $v$ number of visits.

We plug into this equation the known value of visitors:

$c=10+7$

and we solve this expression:

$c=17$

the total cost for 10 visitors is 17.

4 0

3 years ago

What operation comes first?

lord [1]

Parentheses!! Don’t forget PEMDAS! (Parentheses, exponents, multiplication, division, addition, subtraction)

6 0

3 years ago

Which define a right triangle?

BartSMP [9]

Answer:

yes

Step-by-step explanation:

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8 0

3 years ago