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3 years ago

Help! Please? Dont understand

Mathematics

2 answers:

mart [117]3 years ago

7 0

The answer for this is B

xz_007 [3.2K]3 years ago

4 0

Answer:

Step-by-step explanation:

Answered by Gauthmath

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If m = (3x-1) and n = (3x+1),sjow that x² = mn+1 by 9

aalyn [17]

Step-by-step explanation:

${x}^{2} = \frac{mn + 1}{9}$

$(3x - 1)(3x + 1)$

$9 {x}^{2} - 1$

${x}^{2} = \frac{9 {x}^{2 } - 1 + 1 } {9}$

${x}^{2} = \frac{9 {x}^{2} }{9}$

${x}^{2} = {x}^{2}$

So this identity is true.

5 0

3 years ago

Ridley bought 3 3/4 yards of blue fabric,12 5/6 yards of red fabric,and 7 2/3 yards of purple fabric.if she paid $7.50 per yard,

Amanda [17]

The fabric cost $181.875

Step-by-step explanation:

Blue fabric bought = 3 3/4 yards , change to improper fraction (4*3)+3/4 = 15/4 yards

Red fabric= 12 5/6 yards = 77/6 yards

Purple fabric= 7 2/3 yards= 23/3 yards

Find total length of fabric bought, 15/4 +77/6 +23/3 =291/12 yards

Cost per yard= $7.50

Total cost will be, 291/12 * 7.50 =$ 181.875

Learn More

Cost : brainly.com/question/12878495

Keywords : cost, yard

#LearnwithBrainly

5 0

3 years ago

QF Q6.) Find the function for a.

irakobra [83]

The function for a is (f o g) (x) = 8x^2-10.

Explanation

=========================
$f(x)=2x-4, g(x)=4x^2-3, (f o g)=f(g(x))$

I already knew that the g of x is equal to $4x^2-3$ so I substitute inside of the g of x

$g(x)=4x^2-3$ =======> $f(x)=4x^2-3$ =============> $2(4x^2-3)-4$

simplify it

$2(4x^2-3)-4$ =======> $8x^2-6-4$ =========> $8x^2-10$

$(f o g) = 8x^2-10$

5 0

3 years ago

Read 2 more answers

Consider the figure shown. what is the measure of the given angles?

Mars2501 [29]

Step-by-step explanation:

180°=46° +2x=> 2x=134°=>x=67°

x+y=180°=>y=180° -x=>y= 180°-67°=>y=113°

7 0

3 years ago

Round each number to the place of the underlined digit the 4 is underlined in 324,650

Otrada [13]

Answer: my bad 324,000 isnt the answer. Its 325,000

Step-by-step explanation:

4 0

3 years ago