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Sonbull [250]
2 years ago
7

BC=10, AC=x, and AB=2x-21. Solve for x ,and find the length of AB.

Mathematics
1 answer:
KonstantinChe [14]2 years ago
4 0

Answer:

Briggs is planning to make abatch of home made play dough for an art projections

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Help me to solve this answer below :((!!!
katrin2010 [14]

Answer:

3/2+1/2+17/2=21/2

5 0
2 years ago
Read 2 more answers
If the 9th term of an ap is 1/7 and the 7th term os 1/9 find the 63rd term
Mnenie [13.5K]

Answer:

a_{63} = 1

Step-by-step explanation:

The n th term of an arithmetic progression is

a_{n} = a + (n - 1)d

where a is the first term and d the common difference

use the 9 th term and 7 th term to find a and d

a_{9} = a + 8d = \frac{1}{7} → (1)

a_{7} = a + 6d = \frac{1}{9} → (2)

Subtract (2) from (1) term by term

2d = \frac{2}{63} ⇒ d = \frac{1}{63}

Substitute this value into (2) and solve for a

a + \frac{6}{63} = \frac{1}{9}

a = \frac{1}{9} - \frac{6}{63} = \frac{1}{63}

Hence

a_{63} = \frac{1}{63} + \frac{62}{63} = 1


5 0
3 years ago
Write 745,000 in scientific notation
jolli1 [7]
7\underbrace{45,000}_{\leftarrow5}=7.45000\times10^5=7.45\times10^5
3 0
3 years ago
5x + 2y = 3<br> 2x+3y=-1<br> Solve
professor190 [17]

Answer:

x = 1

y = -1

Point = (1,-1)

Step-by-step explanation:

2x + 3y = -1   =   y = -2/3 - 1/3

5x + 2(-2/3 - 1/3) = 3

5x - 1 1/3 - 2/3 = 3

5x - 2 = 3

<u>     +2    +2</u>

5x = 5

<em><u>x = 1</u></em>

2(1) + 3y = -1

2 + 3y = -1

<u>-2           -2</u>

3y = -3

<em><u>y = -1</u></em>

3 0
2 years ago
HELP ME NEOWWWWWWW please..
Llana [10]

Answer:

B

Step-by-step explanation:

the more people who would've surveyed then the graph would be at the same rate.

5 0
3 years ago
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