What’s the value of x ?

Answer:

c + d = 400

0.2c + 0.5d = 156

Step-by-step explanation:

Let

c = number of liters of 20% acid solution

d = number of liters of 50% acid solution.

c + d = 400 (1)

0.2c + 0.5d = 400(0.39)

0.2c + 0.5d = 156 (2)

From (1)

c = 400 - d

Substitute c = 400 - d into (2)

0.2c + 0.5d = 156 (2)

0.2(400 - d) + 0.5d = 156

80 - 0.2d + 0.5d = 156

- 0.2d + 0.5d = 156 - 80

0.3d = 76

d = 76/0.3

d = 253.33 liters

Substitute d = 253.33 into (1)

c + d = 400

c + 253.33 = 400

c = 400 - 253.33

c = 146.67 liters

Answer:

3x+9

Step-by-step explanation:

If it’s multiple choice the other one is

x +1+1+1+x +1+1+1+ x +1+1+1

I hope this helps!

Answer:

190

Step-by-step explanation:

Answer:

B = -3

Step-by-step explanation:

Answer:

The interest is: $2550.00

Step-by-step explanation:

I = P x r x t

    P is the principal amount, $12000.00.

   r is the interest rate, 4.25% per year, or in decimal form, 4.25/100=0.0425.

   t is the time involved, 5....year(s) time periods.

   So, t is 5....year time periods.

To find the simple interest, we multiply 12000 × 0.0425 × 5 to get that:

The interest is: $2550.00

Answer: 22.86

Step-by-step explanation:

Answer:

3’d

Step-by-step explanation:

Answer:

15 km?

Step-by-step explanation:

10 km per hour for one hour is 10km. plus the half hour, half of the distance 5km is just 15km

Answer:

im pretty sure it would be 5/3

Step-by-step explanation:

u go up 5 squares and then over 3

Answer:

[tex]\frac53[/tex]

Step-by-step explanation:

Hello!

Slope is calculated by the formula [tex]\frac{Rise}{Run}[/tex].

The two points I'm going to pick are (0,-1) and (3,4).

Now let's find the changes in x and y.

Plugging it into the formula, you get a slope of [tex]\frac53[/tex].

Answer:

(-8, 2)

Step-by-step explanation:

Start with (-3, 4).  Subtract 5 units from -3, obtaining -8, and subtract 2 units from 4, obtaining 2:  (-8, 2)

Answer:

A

Step-by-step explanation:

The other values are lesser than 5.63

Answer:

5.658-A

Step-by-step explanation:

Answer:

Whole number

rational numbers

natural number

interger

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

you must follow the y=mx+b

m=slope

b=intercept

Answer:

B) -2

Step-by-step explanation:

y= -2x+11 is in slope-intercept form

y= mx+b

y= y-coordinate

x= x-coordinate

m= slope

b= y-intercept

m= -2

Answer:

x= -5

Step-by-step explanation:

if youre looking for the x this is the answer.

he criteria for polygon inscribed in a circle is every vertices are points on the circle and all sides are included within the circle.

Polygon is "any two closed curve consisting of a set line segments connected such that no two segments connected".

According to the question,

A polygon is inscribed in a circle if its all vertices are points on the circle and all sides(Edges) are included within the circle. All regular polygon can be inscribed in a circle. The center of an inscribed polygon is also the center of the circumscribed circle.

Hence, the criteria for polygon inscribed in a circle is every vertices are points on the circle and all sides are included within the circle.

Learn more about Polygon here

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Answer:

0.5

3.1

16 %

Step-by-step explanation:

The chosen topic is not meant for use with this type of problem. Try the examples below.

Answer:

x=17

Step-by-step explanation:

So first we know that vertical angles are equal

And for the first part we have a 73 and x

So 73+x=90 Becuase in this situation if you add them up its gonna give you a right angle

you’ll get 17

SO 17 is X

Answer:

x=5

Step-by-step explanation:

the sentimental thing is that Jen's mother is the most common person in a row with

Answer:

i) the length is 10cm

ii) the perimeter is 36 cm

Step-by-step explanation:

i) We know that Area of a rectangle can be found by using the following formula...

A = l x w

(where A is area of the triangle, l is the length of the triangle, and w is the width of the rectangle).

From this we know that

l = A/w

[tex]l = 80cm^{2} / 8cm = 10cm[/tex]

ii) Now that we know both the length and the width we know we can find the perimeter by using the following formula...

P = 2(l + w)

[tex]P = 2(10cm+ 8cm )\\P = 20cm + 16cm\\P = 36cm[/tex]

Answer:

It is 8,7

Hope this helps!

Step-by-step explanation:

Answer:

A dialation followed by a reflection

Step-by-step explanation:

When you dialate a shape it changes the size which makes the shape similar but not congrouent.

The option “a dilation followed by a reflection” will produce an image that is not congruent to its pre-image option, fourth is correct.

It is defined as the change in coordinates and the shape of the geometrical body. It is also referred to as a two-dimensional transformation. In the geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.

As we know, the translation will shift the object.

If rotate the image with 90 degree about origin will change the orientation of the image but shape will remains same.

A dilation followed by reflection will change the image because the transformation dilation is used to resize an item. Dilation is a technique for making items appear larger or smaller.

Thus, the option "a dilation followed by a reflection" will produce an image that is not congruent to its pre-image option fourth is correct.

Learn more about the geometric transformation here:

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try practicing with different examples

YES

Base=b

Height= h

Area 1=A1=1/2*b*h

Base=b

Height= 4h

Area of triangle 2=A2=1/2*b*4h

A2/A1= (1/2*b*4h)/(1/2*b*h)

= (1/2*b*4h)/(1/2*b*h)

=4/1

Ratio of heights =h2/h1= 4/1

Ratio of areas =A2/A1= 4/1

They are proportional.

Answer:

its c

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Step-by-step explanation:

fhjfjjgcmhmhcxmgkhfkhffhkhfkgfoyfkyftfutdutxjtxoyf

Answer:

2nd option

Step-by-step explanation:

X are all whole numbers which are integers

and Y is bigger than X

ex: 0(x) and 4(y)

4 is bigger than 0