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3 years ago

Can u help me on this one because my teacher did not show me how to do it 6+7 (8b+4)

2 answers:

8 0

First use the distributive property, then combine like terms.
6 + 7 (8b + 4) = 6 + 7(8b) + 7(4)
= 6 + 56b + 28
= (6 + 28) + 56b
= 34 + 56b

Ber [7]3 years ago

7 0

6+7 (8b+4)

6+(7)(8b)+(7)(4)
6+56b+28

Combine Like Terms:

6+56b+28

(56b)+(6+28)

answer: 56b+34

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The model represents x2 – 9x + 14. An algebra tile configuration showing only the Product spot. 24 tiles are in the Product spot

klio [65]

I didn't get all the part with the tiles, but here's the general answer:

given a polynomial

$p(x)=ax^2+bx+c$

we have that $x-k$ is a factor of $p(x)$ if and only if k is a root of $p(x)$ , i.e. if

$p(k)=ak^2+bk+c=0$

So, given the polynomial

$p(x)=x^2-9x+14$

We can check if $x-9$ is a factor by evaluating $p(9)$ :

$p(9)=81-81+14=14\neq 0$

So, $x-9$ is not a factor.

Similarly, we can evaluate $p(2),\ p(-5),\ p(-7)$ to check if $x-2,\ x+5,\ x+7$ are factors:

$p(2)=4-18+14=0,\quad p(-5)=25+45+14=84\neq 0,\quad p(-7)=49+63+14=126 \neq 0$

So, only $x-2$ is a factor of $x^2-9x+14$

4 0

3 years ago

Read 2 more answers

The length of the minute hand is 150% of the length of the hour hand. In 2 hours, how much farther does the tip of the minute ha

nekit [7.7K]

The question seems incomplete, as the length of the hour hand isn't given ;

If the tip of the hour hand is taken as 30mm

Answer:

534.1 mm

Step-by-step explanation:

In 2 hours ; cycle performed :

2/ 12

Circumference of a circle = 2 * pi *r

Circumference = 2 * pi * 30 = 60pi

Distance traveled : 60pi * 2/12 = 120pi/ 12 =10pi

The minute hand travels 2 comply cycle in 2 hours

150% taller than short hand :

1.5 * 30 = 45 mm

Distance traveled : 2 (2 * pi * 45) = 180pi

(180pi - 10pi) = 170pi

170π = 534.07075

= 534.1 mm

7 0

3 years ago

I'm lazy but have a lot of points

ohaa [14]

Answer: 37

Step-by-step explanation:

Well DCB is a right angle, and there is already half which is 53 degrees, subtract 90 by 53 and you will get your answer.

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3 years ago

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Kisachek [45]

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8 0

2 years ago

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Bryson buys a bag of 64 plastic miniature dinosaur s. Could he distribute them equally into six storage containers and not have

Burka [1]

No because 6 multiplied by 10 is 60 and 6 multiplied by 11 is 66

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4 years ago