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3 years ago

PLs help I will def make you brainlist pls help both 8,9

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

5 0

Answer:

The answers are A and C

Step-by-step explanation:

Have a good day

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A baker used 2 5/6 pounds of butter to make cookies. On a particular day, the baker used 8 1/2 pounds of butter to make cookies.

ddd [48]

8 1/2 / 2 5/6

17/2 / 17/6 

1/2 / 1/6 

3

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3 years ago

Find the quadratic function .. 3x2 - y2 = 9 x2 + 2y2 = 38

ruslelena [56]

Answer:

Step-by-step explanation:

3x2 - y2 = 9.........(1)

x2 + 2y2 = 38......(2)

Let x^2 = a and y^2 = b

:- the two equations becomes

3a - b = 9..........(3)

a + 2b = 38.......(4)

Multiplying (4) by 3

3a + 6b = 114........(5)

Substracting (3) from (5)

3a - 3a + 6b - (-b) = 114 - 9

6b +b = 105

7b = 105

b = 105/7

b = 15

And 3a - b = 9 putting b = 15

3a - 15 = 9

3a = 15+9

3a = 24

a = 24/3

a = 8

And

x^2 = a

x^2 = 8

x = √8

x = √(4×2)

x = 2√2

Also y^2 = b

y^2 = 15

y = √15

6 0

3 years ago

If ABC = DEC, B= 44º and E= 4x x= [?]

kolezko [41]

Value of x is 11

Step-by-step explanation:

Step 1: Find x when ΔABC ≅ ΔDEC.

When these two triangles are congruent, their corresponding angles and sides will be equal.

⇒ ∠B = ∠E

⇒ 44° = 4x

∴ x = 44/4 = 11

5 0

3 years ago

Read 2 more answers

Please Help! What’s the Answer??

almond37 [142]

Finding the slope using two points:

The formula for slope is

$\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

In this case...

(-4, 3) and (5, 3)

$y_{2} =3\\y_{1} =3\\x_{2} =5\\x_{1} =-4$

^^^Plug these numbers into the formula for slope...

$\frac{3-3}{5 - (-4)}$

$\frac{0}{9}$

B. 0

^^^This is your slope

Hope this helped!

~Just a girl in love with Shawn Mendes

4 0

3 years ago

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There is an alien machine which produces seven aliens every two seconds. At this rate how many aliens will produces in one hour?

lyudmila [28]

Well, there are 60 minutes in 1 hour, and there are 60 seconds in 1 minute, so in 60 minutes, there are 60 * 60 seconds, or 3600 seconds in 60 minutes, or 1 hour, therefore, in 1 hour there are 3600 seconds.

the machine makes 7 aliens in 2 seconds, how many will it make in 3600 seconds?

$\bf \begin{array}{ccll}
aliens&seconds\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
7&2\\
a&3600
\end{array}\implies \cfrac{7}{a}=\cfrac{2}{3600}\implies \cfrac{7\cdot 3600}{2}=a$

that many.

3 0

3 years ago

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