A chemist has two solutions of HNO3. One has a 40% concentration and the other has a 25% concentration.
How many liters of each solution must be mixed to obtain 57 liters of a 26% solution?

Answer:

a

Step-by-step explanation:

Answer:

m1= 43

m2=17

m3=120

m4=m5=m6=60

m7=17

m8=120

m9=43

Step-by-step explanation:

"Given ABC is an isosceles triangle and DBE is an equilateral triangle. we have to find each missing measure.

In triangle ABC,

∠1=∠9    (∵isosceles triangle)

⇒ 4x+3=9x-47

⇒ 9x-4x=3+47 ⇒ 5x=50 ⇒ x=10

Hence, ∠9=∠1=(4x+3)°=4(10)+3=43°

Also, given ΔBDE is an equilateral triangle, and all angle of equilateral triangle are equal.

∴ ∠4+∠5+∠6=180°

⇒ ∠4+∠4+∠4=180° ⇒ 3∠4 = 180° ⇒ ∠4 = 60°

∴ ∠4=∠5=∠6=60°

By exterior angle property, ∠3=∠5+∠6=60°+60°=120°

                                            ∠8=∠5+∠4=60°+60°=120°

In ΔABD, ∠1+∠2+∠3=180°

            ⇒ 43°+120°+∠2=180°⇒ ∠2 = 17°

In ΔABD, ∠9+∠8+∠7=180°

            ⇒ 43°+120°+∠7=180°⇒ ∠7= 17°"

by SerenaBochenek

Answer:

x=6

Step-by-step explanation:

5a) 5x-7=2x+18

5b) 6

5c) 23

5d) 30

Answer:

10/14 or 10 over 14, 15/21 or 15 over 21, and 20/28 or 10 over 28

Step-by-step explanation:

you multiply both numbers by 2, 3, and 4 to make equivalent fractions.

Brainliest would be appreciated thank you!

Answer:

D is the most likely answer

Step-by-step explanation:

this problem is strange, but knowing that 3x + 17 has a domain of all reals, all of them are possible, so the only limits are 5 and 71...

Answer:

2.4

Step-by-step explanation:

2.380952381 < 2.4

the decimal digits all round up to the next tenth

Answer:

9/10

Step-by-step explanation:

I used a calculator ! :)

Answer:

6 thousandths.

Step-by-step explanation:

The 1 in the number 59,732.106 would the tenth value.

The 0 in the number 59,732.106 would be the hundreth value since its past the decimal point,

The pattern goes by the tenth, hundredth, thousandth, and then ten-thousandth.

-kiniwih426

Answer:

B) √(30)

Step-by-step explanation:

A: The cube root of 125 is 5 because 5^3, or 5 × 5 × 5, equals 125.

B: The square root of 30 is between the numbers 5 and 6, meaning 30 is between 25 and 36. The square root of 30 is about half-way in between 5 and 6, so we can say √(3) ≈ 5.5

Now, when we compared 5.5 and 5, 5.5 is obviously greater. Therefore, the correct answer is B √(30).

Line R has the undefined slope

Answer:

C/R

Step-by-step explanation:

Answer:

Step-by-step explanation:

Jen 's drawing shows that the lines are parallel in fact they are not parallel !  Since their slopes are not equal !

[tex]\displaystyle \left \{ {{y=2x+3} \atop {-y=2x+1}\ \ |\cdot (-1) } \right. => \left \{ {{y=\boldsymbol {2}x+3} \atop {y=\boldsymbol {-2}x-1}} \right. => -2\neq 2[/tex]

They will intersect at point A with coordinates  :

[tex]2x+3=-2x-1 \\\\ 4x=4 \\\\ x=-1 \ ; \ y=1 => A(-1 \ ; \ 1)[/tex]

Answer:

Breadth/width = 1.936cm, length = 7.746cm

Step-by-step explanation:

Perimeter of a rectangle would be [tex]2L*2W=60cm[/tex] in this case. Breadth is width.

But we can rewrite this equation given that the width is 1/4 the length. This means 4 of the widths would equal one length.

[tex]W=\frac{1}{4}L[/tex]

[tex]L=4W[/tex]

We can substitute L with the 4W

[tex]2(4W)*2(W)=60cm[/tex]

Now we can just solve for the width W.

[tex]8W*2W=60\\16W^2=60\\W^2=\frac{15}{4} \\W=\sqrt{\frac{15}{4} } \\W=\frac{\sqrt{15} }{2}=1.936cm[/tex]

We now know the width is about 1.936cm

We can find the length given our formula before of [tex]L=4W[/tex]

[tex]L=4(\sqrt{\frac{15}{2} } )=2\sqrt{15} =7.746cm[/tex]

So the breadth/width is 1.936cm and the length is 7.746cm.

answer

is 13.21 because i did the promble on the calculatoor

Answer:

x= 23/6

x=3.83

x= 3 5/6

all of those are the answers and are equal

hope this helped

can I plz be brainiest

Answer:

The numbers are 2 and 3.

Step-by-step explanation:

Answer:

3 and 2

Step-by-step explanation:

3 x 2= 6

3+2=5

Answer:

7x-2

Step-by-step explanation:

Answer:

Your answer is 9.8

Step-by-step explanation:

Well, this is fairly simple... You're adding the cost for the move, the cost for large lemonade, and the cost for a small popcorn.

5.25+3= 8.25 | 8.25+1.55= 9.8

Your answer is 9.8

Answer:

$9.80

Step-by-step explanation:

Add the cost of the ticket, lemonade, and popcorn.

total cost=5.25+3+1.55

total cost=9.8

Which means $9.80

n ∈ natural even numbers

Step-by-step explanation:

1 + 3 + 5 + 7 + … + (2n-1)

sum of the first n terms :

Sₙ = n/2(a + Uₙ)

Sₙ = n/2(1 + 2n - 1)

Sₙ = n/2(2n)

Sₙ = n²

∴ so, the solution of n is all natural even numbers

Refer to the attachment

Answer:

24.73

Step-by-step explanation:

h=63.4+2.41f

h=123

123=63.4+2.41f

59.6=2.41f

24.73=f

If the value of h is 123. Then the length of the femur will be 24.73 centimeters.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

The linear equation is given below.

h = 63.4 + 2.41 f

Where h represents the expected height in centimeters and f represents the length of the femur in centimeters.

If the value of h is 123. Then the f-value is given as,

123 = 63.4 + 2.41 f

2.41 f = 59.60

f = 24.73 cm

Assuming that the worth of h is 123. Then, at that point, the length of the femur will be 24.73 centimeters.

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ2

Answer:

52%

Step-by-step explanation:

you got to divide 15 by 785. First 15 goes into 78 5 times which is 75. Then subtract 78 by 75 which is 3. Then bring down the 5 which makes 35 and then 15 goes into 35 two times which is 30 subtract 35 by 30 which is 5 bring up the 5 into a fraction and the ansewer in percentage is  52%.

Answer:

79,210,000

Step-by-step explanation:

:)

Step-by-step explanation:

given the linear inequality y >2x-1 on the coordinate plane.

the true statement is:

C. The graph will have a DASHED boundary line, with shading ABOVE.

for '>' meaning dashed line

Answer:

C. The graph will have a DASHED boundary line, with shading ABOVE.

Step-by-step explanation:

When graphing inequalities:

Given inequality:

[tex]y > 2x-1[/tex]

Therefore, the graph will have a dashed boundary line and shading above the line.

Learn more about graphing inequalities here:

https://brainly.com/question/27743925

https://brainly.com/question/27959739

Answer:

The entered points belong to a vertical line. There is no slope.

Step-by-step explanation:

Answer:

No ingles

Step-by-step explanation:

Sorry not sorry

Answer:

Step-by-step explanation:

123

Answer:

divide: 40

multiply:4.5x10^10

Step-by-step explanation: