-2(a-8)+6a=36
what's the value of a
A=

Answers

Answer 1

Answer: Distribute -1 into the brackets.
-2(a - 8) + 6a = 36
-2a + 16 + 6a = 36
Take 16 to the other side
-2a + 6a + 16 = 36
- 16 -16
-2a + 6a = 36 - 16
Combine like terms
4a = 20
Divide by 4 on either sides to isolate a
$(4a)/(4) = (20)/(4)$
4 and 4 cancels out.
a = 5

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At a grocery store, the price of 3 cans of soup is $6.90. at this rate, how much would 10 cans of soup cost

Answers

Answer:

$23

Step-by-step explanation:

At a grocery store 3 cans of soup cost $6.90

3 cans = 6.90

1 can= 6.90/3

1 can = $2.3

Therefore the cost of 10 cans can be calculated as follows

1 can= $2.3

10 cans= 10×2.3

= $23

Hence 10 cans will cost $23

I need help on 22 pls

Answers

Answer:

a) 1.24 g/ml

b) 2.4%

Step-by-step explanation:

density = mass/volume

volume of sample = 28.4 - 15 = 13.4mL

density = 13.4/10.8

=1.24 g/ml

percent error

1.27 - 1.24 = 0.03

0.03/1.24 *100% = 2.4% error

HELP NEEDED, GIVING BRAINLIEST!Apply the dilation D to the polygon with the given vertices. Name the coordinates of the image points. Identify and describe the transformation.

D: ( x, y ) ---> ( 4x, 4y )

A ( 2, 1 ), B ( 4, 1 ), C ( 4, -3 )

A. This is a dilation about (0, 0) with a scale factor of 0.25; A'(8, 4), B' (16, 4), C' (16, -12).

B. This is a dilation about (0, 0) with a scale factor of 4; A'(8, 4), B' (16, 4), C' (16, -12).

C. This is a dilation about (0, 0) with a scale factor of 0.25; A'(0.5, 0.25), B, (1, 0.25), C' (1, - 0.75).

D. This is a dilation about (0, 0) with a scale factor of 4; A'(0.5, 0.25), B'(1, 0.25), C'(1, -0.75)

Answers

The correct answer is:

B. This is a dilation about (0, 0) with a scale factor of 4; A'(8, 4), B' (16, 4), C' (16, -12).

Step-by-step explanation:

Given

Dilation: D : (x,y) => (4x,4y)

And Vertices

A ( 2, 1 ), B ( 4, 1 ), C ( 4, -3 )

Applying dilation on all vertices

$A ( 2, 1 ) => A'(4*2, 4*1) => A'(8,4)\nB ( 4, 1 ) = > B' (4*4 ,4*1) = > B'(16,4)\nC(4,-3) => C' (4*4 , 4*-3) => C'(16, -12)$

To find the scale factor,

As we are multiplying each vertex coordinate by 4, the dilation factor is 4.

Moreover,

$(A')/(A) = ((8,4))/((2,1)) = (4,4)$

Hence the scale factor is 4.

So,

The correct answer is:

B. This is a dilation about (0, 0) with a scale factor of 4; A'(8, 4), B' (16, 4), C' (16, -12).

Keywords: Dilation, Scale factor

Learn more about dilation at:

#LearnwithBrainly

What is the slope of the line that contains the points (-1,2) and (2,2)

Answers

Answer:

the equation to find the slope is (y2-y1)/(x2-x1)

the points are (-1,2) and (2,2) so plug it in and you get

(2-2)/(2-(-1))

0/ (2+1)

0/3

whenever the numerator is 0, that means the slope is 0. the line is just a horizontal line.

2x+3=-7 what does x equal

Answers

Answer:-5

Step-by-step explanation:

2x+3=-7

2x=-7-3

x=-10/2

so,

x=-5

Answer: x=-5

Step-by-step explanation: just did the assessment on edge

What is log(z^4/5) written in expanded form? 4logz−log5
4log5−logz
log5−4logz
logz−log5+4
please help asap will give brainliest

Answers

The log expression log(z⁴/5) can be written in expanded form as 4log z - log 5 option (A) is correct.

What is a logarithm?

It is another way to represent the power of numbers, and we say that 'b' is the logarithm of 'c' with base 'a' if and only if 'a' to the power 'b' equals 'c'.

$\rm a^b = c\nlog_ac =b$

It is given that:

The log expression is:

= log(z⁴/5)

As we know, from the logarithm properties:

log mⁿ = n log m

log(m/n) = log m - log n

Applying log properties we get:

= log(z⁴/5)

= log z⁴ - log 5

= 4log z - log 5

Thus, the log expression log(z⁴/5) can be written in expanded form as 4log z - log 5 option (A) is correct.

Learn more about the Logarithm here:

brainly.com/question/163125

#SPJ2

To get answer:

$\mathrm{Apply\:log\:rule}:\quad \log _c\left((a)/(b)\right)=\log _c\left(a\right)-\log _c\left(b\right)\n\log _(10)\left((z^4)/(5)\right)=\log _(10)\left(z^4\right)-\log _(10)\left(5\right)\n=\log _(10)\left(z^4\right)-\log _(10)\left(5\right)\n\mathrm{Simplify}\:\log _(10)\left(z^4\right)\n\log _(10)\left(z^4\right)\n\mathrm{Apply\:log\:rule\:}\log _a\left(x^b\right)=b\cdot \log _a\left(x\right),\:\quad \mathrm{\:assuming\:}x\:\ge \:0\n=4\log _(10)\left(z\right)\n$