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Artyom0805 [142]
3 years ago
12

A+3x=y+z make 'x' the subject ​

Mathematics
1 answer:
STatiana [176]3 years ago
8 0

Answer: x= (y+z-a)/3

Step-by-step explanation:

You need to move every thing but the x on the other side, so subtract a and divide the whole thing by 3.

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Wilbur and eugene are selling cheesecakes for a school fundraiser customers can buy french silk cheesecakes and apple cheesecake
elixir [45]

Answer:

one french silk cheesecake = $7

one apple cheescake = $20

Step-by-step explanation:

Let the cost of one french silk cheesecake be represented by a

Let the cost of one apple cheescake be represented by b.

We are told that wilbur sold 13 french silk cheesecakes and 12 apple cheesecakes for a total of $331 . This can be written as:

13a + 12b = 331 .......... equation i

Eugene sold 2 french silk cheesecakes and 3 apple cheesecakes for a total of $74. This can be written as:

2a + 3b = 74 ........ equation ii

13a + 12b = 331 .......... equation i

2a + 3b = 74 ........ equation ii

Multiply equation i by 2

Multiply equation ii by 13

26a + 24b = 662 ......... equation iii

26a + 39b = 962 ......... equation iv

Subtract equation iv from iii

-15b = -300

b = 300/15

b = 20

The cost of one apple cheescake is $20.

From equation ii,

2a + 3b = 74

2a + 3(20) = 74

2a + 60 = 74

2a = 74 - 60

2a = 14

a = 14/2

a = 7

The cost of one french silk cheesecake is $7.

6 0
3 years ago
Find the line of inclination of the line if its slope is -√3​
gregori [183]

Answer:

120° or 300°

Step-by-step explanation:

Given,

Slope (m) = -√3

Inclination (α) = ?

Now,

We know,

m = tanα

or, -√3 = tanα

or, tan(120° or 300°)  = tanα

∴ α = 120° or 300°

∴ Inclination is 120° or 300°

4 0
3 years ago
Juan wants to paint somthing in the shape of a right rectangle prism. The prism is 17 in long 11 in wide and 9 in high. He had e
Nadusha1986 [10]

Juan does not have enough paint to cover shape of a right rectangle prism

<em><u>Solution:</u></em>

Given that,

Juan wants to paint something in the shape of a right rectangle prism

From given,

Length = 17 inches

Width = 11 inches

Height = 9 inches

<em><u>The surface area of prism is given as:</u></em>

A=2(wl+hl+hw)

Where, "l" is the length and "w" is the width and "h" is the height

<em><u>Substituting the values we get,</u></em>

A = 2(11 \times 17 + 9 \times 17 +9 \times 11)\\\\A = 2(187+153+99)\\\\A = 2 \times 439 \\\\A = 878

Thus surface area of prism is 878 square inches

Given that,

He had enough paint to cover 850 sq in

No he cannot paint since surface area is 878 square inches which is greater than 850 square inches

So, he does not have enough paint

8 0
3 years ago
What season is it in the northern hemisphere?<br> A) spring<br> B) fall<br> C) summer<br> D) winter
Umnica [9.8K]

Answer:

In the Northern Hemisphere right now it is Fall.

8 0
3 years ago
I hate math i dont understand it help please
Iteru [2.4K]

parallel lines have the same slope

y = 4x-5  the slope is 4


slope intercept form

y= mx+b

the slope is 4 and the y intercept is 3

y = 4x +3

4 0
3 years ago
Read 2 more answers
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