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3 years ago

7

Find the value of x and y 2x+7y=4 -4x-3y=14

1 answer:

guapka [62]3 years ago

5 0

Answer:

x=-5 y=2

Step-by-step explanation:

1) multiplying equation 1 by 4 and multiplying equation 2 by 2 .

2)adding them we get value of y.

3) replacing value of y in either of given equation

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Which of the following best describes an imaginary number?

netineya [11]

The square root of a negative number. Because anything times itself can't give you a negative answer. Because a negative times a negative will equal a positive number.

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4 years ago

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An ice cream stand offers single-scoop waffle-cones or bowls. Three flavors are available: strawberry, chocolate, and vanilla. H

Otrada [13]

ANSWER:

6

STEP-BY-STEP EXPLANATION:

We have two toppings, the first is the ice cream container where there are two options and the second is the ice cream flavor where there are a total of three options.

Therefore, the number of possible ways to order ice cream would be:

$\begin{gathered} p=2\cdot3 \\ \\ p=6 \end{gathered}$

There are a total of 6 ways to order an ice cream

4 0

1 year ago

The value of the fraction 3c+2/4 one less than the value of the fraction 5c-1/3<br><br> Solve for c

kifflom [539]

Answer:

<h3>c = 2</h3>

Step-by-step explanation:

The value of the fraction 3c+2/4 one less than the value of the fraction 5c-1/3 is expressed as;

(3c+2)/4 = (5c-1)/3 - 1

We are to calculate the value of c as shown;

(3c+2)/4 = (5c-1)/3 - 1

(3c+2)/4 = [(5c-1) - 3]/3

(3c+2)/4 = 5c-4/3

Cross multiply;

3(3c+2) = 4(5c-4)

9c + 6 = 20c -16

9c - 20c = -16 -6

-11c = -22

c = 22/11

c = 2

Hence the value of c is 2

4 0

3 years ago

What are the measurements of each angle?

zmey [24]

Answer:

2. 70

3. 70

4. 110

5. 110

6.70

7. 70

8. 110

Step-by-step explanation:

a straight line = 180 so 1+2 has to = 180 1+3 has to = 180 2+4 has to = 180 and so on

5 0

3 years ago

Solve the simultaneous equations<br> 4x + 3y = 20<br> 4x + 2y = 14

fiasKO [112]

Step-by-step explanation:

$\underline{ \underline{ \text{Given}}} :$

$\tt{4x + 3y = 20........... \text{ equation \: ( \: i \: )}}$
$\tt{4x + 2y = 14.......... \text{equation \: (ii)}}$

$\underline{ \text{USE \: ELIMINATION \: METHOD}} :$

Subtract equation ( ii ) from equation ( i ) :

Remember that the sign of each term of the second expression changes i.e equation ( i ) now becomes -4x -3y = -20

$\tt{ \cancel{4x }+ 2y = 14}$

$\tt{ \cancel{ - 4x} - 3y = - 20}$

__________________

$\tt{ - y = - 6}$

⟿ $\tt{ \boxed{ \tt{y = 6}}}$

Again , Substituting the value of y in equation ( ii ) :

⟿ $\tt{4x + 2 \times 6 = 14}$

⟿ $\tt{4x + 12 = 14}$

⟿ $\tt{4x = 2}$

⟿ $\boxed{ \tt{x = \frac{1}{2}}}$

$\red{ \boxed{ \boxed{ \tt{Our \: final \: answer : x = \frac{1}{2 } \: and \: y = 6}}}}$

Hope I helped ! ツ

Have a wonderful day / night ! ♡

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8 0

3 years ago