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3 years ago

11. Find the value of x.(6x + 7)(8x - 17)

Mathematics

1 answer:

Leto [7]3 years ago

6 0

Answer:

X= -7/6, 17/8

Step-by-step explanation:

Foil it, then use quadratic to find zeros/roots.

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There were 20 boys and 26 girls in a chess club last year. This year the number of boys increased by 30% but the number of girls

Readme [11.4K]

Step-by-step explanation:

Boys

$20 + (20 \div 100)30 = \\ = 20 + 0.2 \times 30 = \\ = 20 + 6 = \\26$

Girls

$26 - (26 \div 100)15 = \\ = 26 - 0.26 \times 15 = \\ = 26 - 3.9 = \\ = 22$

Total last year 46

Total this year 48

Increase

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2 years ago

Find the area for this problem

Mashcka [7]

Answer:

the answer is 27

Step-by-step explanation:

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3 years ago

A semicircular archway is built in front of a garden using 8 congruent granite tiles, as shown in the diagram. Find the area of

crimeas [40]

So there's 8 tiles.
Radius from archway to the outer edge would be : 7 +1 = 8ft

You can use this formula to count the area of semi circle : π r^2/2

A = 3.14 x 8ft^2 = 100.48 ft ^2
A = 3.14 x 7ft^2= 76.92 ft^2

100.48 - 76.92 = 23.55 ft^2

Then you have to divide it with the total tiles
23.55/8 = 2.94 ft^2 per tile >> (rounded to nearest tenth)

hope this helps

5 0

3 years ago

A number sentence is shown below:

d1i1m1o1n [39]

Number sentence is simply a sentence, that uses numbers and arithmetic signs.

The context that can be created from the sentence is: How many bits are there, in $32\frac 14$ bytes
The verbal meaning of $32\frac 14 \div \frac 18 = 258$ is: When $32\frac 14$ is divided by $\frac 18$ , the result is $258$

Given

$32\frac 14 \div \frac 18 = 258$

(a) Context or story

A context is as follows:

There are 8 bits in a byte; How many bits are there, in $32\frac 14$ bytes

(b) As a multiplication

$32\frac 14 \div \frac 18 = 258$

Change the division to multiplication as follows:

$32\frac 14 \times \frac 81 = 258$

(c) Verbal explanation how the numbers are related

When $32\frac 14$ is divided by $\frac 18$ , the result is $258$

Read more about number sentence at:

brainly.com/question/17322770

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3 years ago

Given f (x) = startlayout enlarged left-brace first row 3 startroot 2 x minus 1 endroot, for x less-than-or-equal-to 2 second ro

qwelly [4]

These 2 equations has no solution and the equations are independent of each other.

What is liner equation with two variable?

An equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e a and b respectively, are not equal to zero.
For example, 10x+4y = 3 and -x+5y = 2 are linear equations in two variables.

-10x² -10y² = -300 ----a

5x² + 5y² = 150 ---- b

While trying to solve this,

We can multiply the eq. b by 2 so we will get eq. c and then add to eq. a we will get 0 as the solution.

10x² + 10y² = 300 ----c

-10x² -10y² = -300 ---a

Everything cutoff, we will get 0, and there is no solution to these equations.

Learn more about liner equation with two variable brainly.com/question/16933755

#SPJ4

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2 years ago

11. Find the value of x.(6x + 7)(8x - 17)​

11. Find the value of x.(6x + 7)(8x - 17)