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3 years ago

7

WILL MARK BRAINIEST y=4 times x + 8 y=3 times x + 2 tell me how you solved by using the subduction method

1 answer:

navik [9.2K]3 years ago

3 0

2 × 4 = 8. Well, in Algebra we don't use blank boxes, we use a letter. ... Instead of saying "obviouslyx=2", use this neat step-by-step approach: ... it to both sides. 4x=8 divide left and right by 4. Which is ... 1x = 2. Solved! x = 2 ... If we multiply by 3 we can cancel out the divide by 3 (because 3/3=1) ... 3 times xplus 9 is 45:.

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One number is 4 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 538,

larisa [96]

Answer:

73

292

173

Step-by-step explanation:

x = first number

4x = second number

100 + x = third number

x + 4x + 100 + x = 538

6x + 100 = 538

6x + 100 - 100 = 538 - 100

6x = 438

6x/6 = 438/6

x = 73

Check:

73 + 4(73) + 100 + 73 = 538

73 + 292 + 173 = 538

538 = 538

5 0

3 years ago

Read 2 more answers

Sara is ordering t-shirts for her school. Sally's Shirt Shop charges $8.50 for each shirt and a one-time set up fee of $60. Shau

tensa zangetsu [6.8K]

Answer:

A ) 8.50x + 11 < 24x + 60

B ) 8.50x + 24 < 11x + 60

C ) 11x + 24 < 8.50x + 60

D ) 8.50x + 60 < 11x + 24

Step-by-step explanation:

8 0

3 years ago

I need help on 11<br> please

Alisiya [41]

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

Question 11 :

the equations are :

$- 2x - 3y = 9$

$4x + 6y = - 18$

now, let's graph the lines ~

As you can see in the attachment, The lines coincides each other, so the equations are :

consistent and dependent

5 0

2 years ago

1/4(1/3k+9)=6 step 1- 1/3k=15 step 2- 1/3k=15 step 3- k=5 find Olgas mistake step 1 step 2 steps 3 Olga did not make a mistake

shtirl [24]

Answer:

Step 3 contains error.

Step-by-step explanation:

The given equation is :

$\dfrac{1}{4}(\dfrac{1}{3}k+9)=6$

Step 1.

Cross multiplying,

$(\dfrac{1}{3}k+9)=24$

Step 2.

Subtract 9 from both sides

$\dfrac{1}{3}k+9-9=24-9\\\\\dfrac{1}{3}k=15$

Step 3.

Cross multiplying

$k=15\times 3\\\\k=45$

So, there is an error in step 3. The correct answer should be 45.

3 0

3 years ago

In △ABC, ∠C is a right angle and sinB=725.

scoundrel [369]

9514 1404 393

Answer:

A 7/25

Step-by-step explanation:

The cosine of an angle is equal to the sine of its complement. In a right triangle, angle A is the complement of angle B. So, ...

cos(A) = sin(B)

cos(A) = 7/25

8 0

2 years ago