Mathematics High School

1) Resolva as expressões numéricas. Não esqueça de deixar os cálculos.
a) 2 + 8-3-5 + 15 =
b) 12 + (35 - (10 + 2) +2] =
c) [(18+32) + 8 +5 3] + 6 =
d) 37 + (-25 - (-11 + 19 - 4)] =
e) 60 = {2 • (-7 + 18 = (-3 + 12)]} - [7 • (-3) - 18 = (-2) + 1) =
f) -8 +{-5 + [(8-12) + (13 + 12)] - 10) =​

Answers

Answer 1

Answer:

a=17

b=37

c=117

d=8

e=

f=-2

Related Questions

Two angles of an isosceles triangle are X and (X+10) .find two possible values of X.

Answers

Answer:

Step-by-step exp

X+x+(x+10)=180

3x+10=180

3x=180-170

x=56.666666degrees.

Case 2

x+(x+10)+(x+10)=180

3x+20=180

3x=160

X=53.333333

i hope the answer is help ful

When two angles of an isosceles triangle are given in the form of x, then the value of a single angle can have two possible outcomes those are:

X can be [tex]56.66^\circ[/tex]X can be [tex]53.33^\circ[/tex]

Given,

Two angles: X and [tex]\rm{X}+10[/tex]

As we know in an Isosceles triangle, the sum of all the angles is equal to[tex]180^\circ[/tex] and any of the two angles can be equal.

There can be two possible outcomes:

Case 1. When the two equal angles are X

[tex]\begin{aligned}\text{X}+\text{X}+(\text{X+10})&=180\\3\text{X}+10&=180\\3\text{X}&=180-10\\\text{X}&=\dfrac{170}{3}\\\text{X}&=56.66^\circ\end{aligned}[/tex]

Case 2: When the two equal angles are [tex]\rm{X}+10[/tex]

[tex]\begin{aligned}\text{X}+(\text{X}+10)+(\text{X}+10)&=180\\3\text{X}+20&=180\\3\text{X}&=180-20\\\text{X}&=\dfrac{160}{3}\\\text{X}&=53.33^\circ\end{aligned}[/tex]

Therefore, the two possible values of X can be [tex]56.66^\circ[/tex] and [tex]53.33^\circ[/tex]

To know more about the angles of the isosceles triangle, refer to the link:

https://brainly.com/question/12105959

a line that passes through the point (2,-1) and has a slope of -3

Answers

Answer:

y=3x-7

Step-by-step explanation:

i plotted the point, and used the slope to get the equation

if f(x)=325(.96)^x find f(6)

Answers

9514 1404 393

Answer:

  about 254.40

Step-by-step explanation:

Put the value where x is and do the arithmetic. (Any scientific or graphing calculator can do this for you.)

  f(6) = 325(0.96^6) ≈ 254.40

will give brainliest please help

Answers

Answer:

16g + 24 - (13g- 15)

length   -   width

perimeter = 2(length) - 2(width)

2(16g+ 24) + 2(13g-15)

32g + 48 + 26g - 30

58g + 18

Which properties justify the steps taken to solve the system? {2a+7b=03a−5b=31 10a+35b=0; 21a−35b=217 ​31a = 217 a = 7 2(7)+7b=0 14 + 7b = 0 7b=−14 b=−2 what are each of the steps taken?

Answers

9514 1404 393

Explanation:

2a+7b=0 . . . . . . . . given [eq1]

3a−5b=31 . . . . . . . .given [eq2]

10a+35b=0 . . . . . . multiplication property of equality 5×[eq1] = [eq3]

21a−35b=217 ​. . . . .multiplication property of equality 7×[eq2] = [eq4]

31a = 217 . . . . . . . . addition/substitution properties of equality [eq3]+[eq4]

a = 7 . . . . . . . . . . . . division property of equality (÷31)

2(7)+7b=0 . . . . . . . .substitution property of equality; a=7 in [eq1]

14 + 7b = 0 . . . . . . . properties of real numbers

7b=−14 . . . . . . . . . . addition property of equality; add -14

b=−2 . . . . . . . . . . . . division property of equality (÷7)

will mark brainliest

Answers

(2x+1)+(3x-5)=5x-4 you just have to try some of them out and see which ones work

The ratio of two number is 4:9.When 5 is subtracted from each of them,the new ratio becomes 3:8. Find the numbers.

Answers

Answer:

The numbers are 20 and 45

Step-by-step explanation:

Let the two numbers be a and b

The ratio of the two is 4:9

That means;

a/b = 4/9

9a = 4b •••••(i)

secondly;

Subtracting 5 from each gives a ratio of 3:8

(a-5)/(b-5) = 3/8

8(a-5) = 3(b-5)

8a - 40 = 3b - 15

3b - 15 + 40 = 8a

3b + 25 = 8a

a = (3b + 25)/8 •••(ii)

Insert this into 1

9(3b + 25)/8 = 4b

27b + 225 = 32b

32b - 27b = 225

5b = 225

b = 225/5

b = 45

From i;

9a = 4b

9a = 4 * 45

a = 4 * 45/9

a = 20

9. Jude deposited $550 into an account that
earns simple interest, and after 11 years, the
interest in the account was $484. What was
the simple interest rate?

Answers

Answer:

8% interest rate

Step-by-step explanation:

step-by-step explanation: intrest = 484

Please help me I don’t know what to do

Answers

Look at the angles and the little tallies to match up the triangle. Or use the given: triangle DEF is similar to triangle KJI. If it’s like that in a given you know the order is equal. (D and K are similar, E and J, and F and I)
So if line FD is the 3rd and 1st letters of the first triangle, then it has to be equal to the 3rd and 1st letter of the 2nd triangle.
IK

Another way to do this is that when you find FD on the triangle you can set that the line has 3 tally marks. Then look at the other triangle and find a line in which there are 3 tally marks.
The order in which you put the letters does not matter. IK and KI should both be considered correct
Hope this helped

Omg pls help in my math. It is 6th grade

Answers

Answer:

1. You have to shade 38/100 squares

2. You have to shade 65/100 squares

3. 3/5=15/25, 6/10, 9/15

Yes he’s right or she ?

Which linear inequality best represents the graph?

Answers

Answer:

[tex]3x - 4y \geqslant - 12[/tex]

Step-by-step explanation:

[tex]3x - 4y \geqslant - 12[/tex]

[tex] - 4y \geqslant - 3x - 12[/tex]

Y <= 3/4X +3

X/4-1.2=2
Need this fast

Answers

Answer:

x=12.8

Step-by-step explanation:

add 1.2 to the 2

x/4=3.2

multiply 3.2 by 4

x=12.8

ab=
round to the nearest hundredth

Answers

cos = adjacent / hypotenuse

cos 25° = 4 / AB

cos 25° • AB = 4 / AB • AB

AB cos 25° ÷ cos 25° = 4 ÷ cos 25°

AB = 4/cos 25°

AB = 4.41 (nearest hundredth)

All rational numbers are whole numbers? True or false

Answers

Yes this is very true

Construct quadrilateral with the measurements given below:
Quadrilateral ABCD with AB = 4.5 cm, BC = 5.5 cm, CD = 4 cm, AD = 6 cm
and AC = 7 cm​

Answers

Answer:

Cevap A şkkı

İyi dersler

Please Help!!!!!!!!!!!!! Will Give Brainliest

Answers

Answer:

sum of all angles =180

15° + 25° +(39+x) =180°

40° + 39 +x = 180

79° +x =180

x = 180 - 79

x. = 101

complete angel = 39 +x

= 39 + 101

= 140

All interior angles of triangle add up to a sum of 180.
39+25=64
180-64=116
180-116=64
64+15=79
180-79=101

X=101

PLEASE ITS DUE IN 5 MINUTES I WILL MARK BRAINLIEST!

Answers

Answer: A. the first one wouldn't graph with the x^2 but with it I would say A. Hope this helps

Solve the inequality x+4>6. Then graph the solutions. What are the​ solutions? Select the correct choice below and fill in the answer box to complete your choice.

Answers

Answer:

The ineqaulity is x > 2

Step-by-step explanation:

how many minutes would it take rachel to jog 3 miles if she jogs 1/15 mile every minute

Answers

Answer:

3 mi * 15 min/mi = 45 min

Step-by-step explanation:

List the five ways to determine if two triangles are congruent.

Answers

Answer:

SSS (side, side, side) SSS stands for "side, side, side" and means that we have two triangles with all three sides equal. ...

SAS (side, angle, side) ...

ASA (angle, side, angle) ...

AAS (angle, angle, side) ...

HL (hypotenuse, leg)

The side length of a triangle are 6,8 and 12 are these sides of a right triangle

Answers

Answer:

Yes it a right triangle!!

Hope it helps you!!

Answer:

No

Step-by-step explanation:

6^2 + 8^2 doesn't equal 12^2

WILL MARK BRAINLIEST PLS DO MY MATH DUE: 1 HOUR

Answers

1. a=9 2. k=0 3. w=3 4. x= 5 5. v=14 6. f=8 7. u=5 8. c=1 9. s=8 10. q=1/7 11. k= 1/5 12. j=9 13. r=120 14. b=1.4 15. g= 3.1 and 16. m=25

I also post a picture on how I got each answer.

Hope this helped you out

Answer:

a=9 2. k=0 3. w=3 4. x= 5 5. v=14 6. f=8 7. u=5 8. c=1 9. s=8 10. q=1/7 11. k= 1/5 12. j=9 13. r=120 14. b=1.4 15. g= 3.1 and 16. m=25

Step-by-step explanation:

Enter an equation in the form y = mx + b that represents the function

Answers

Answer: no answer c

Step-by-step explanation:

Solve 11=h-14 please

Answers

Answer:

25

Step-by-step explanation:

25-14=11

Answer:

25

Step-by-step explanation:

11=25-14

Since 11+14 is 25 then h in 11=h-14 must be 25

david roller skates with a constant speed of 12kmh how far can he travel in 3 hours

Answers

Answer:

36

Step-by-step explanation:

12 x 3 =36

Answer:

36 kilometers or 22.4 miles

Step-by-step explanation:

12 kmh times 3 equals 36

A 12-inch diameter pizza has 22 calories per square inch.

About how many calories are in the entire pizza?

Use 3.14 for pi.

Select from the drop-down menu to correctly complete the statement.

There are about
Choose...
calories in the pizza. optains : 264, 414, 2487, 9948

Answers

Answer: C

Explanation: Shown below. :)

Answer:

the answer is 2487

Step-by-step explanation: i took the test

You have 59 total coins in a jar on your nightstand at home. The total amount of money is $12.05. You only have quarters and dimes. How many of each type of coin do you have? (hint - use a different method to write and solve the system).​

Answers

9514 1404 393

Answer:

41 quarters18 dimes

Step-by-step explanation:

When there are two contributors to the mix, it usually works well to let a variable represent the quantity of the larger contributor. Here, that larger contributor is the quarter.

Let q represent the number of quarters. Then 59-q is the number of dimes. The value of the coins, in cents, is ...

  25q +10(59 -q) = 1205

  15q +590 = 1205 . . . . . . . . eliminate parentheses, collect terms

  15q = 615 . . . . . . . . . . . subtract 590

  q = 41 . . . . . . . . . . divide by 15

  59-q = 59 -41 = 18 . . . . . number of dimes

You have 41 quarters and 18 dimes.

Find f(x) and g(x) so that the function can be described as y = f(g(x)).

y = Four divided by x squared. + 9
a) f(x) = x + 9, g(x) = Four divided by x squared.
b)f(x) = x, g(x) = Four divided by x. + 9
c)f(x) = One divided by x., g(x) = Four divided by x. + 9
d)f(x) = Four divided by x squared., g(x) = 9

Answers

the answer is Y/g

y=fgx

y/g=fx,which mines f(x)=y/g

can someone please help me
y=5x+1

Answers

X= - 1/5

Y=5x+1
0=5x+1
-5x=1
-1/5

Answer:

X= [tex]\frac{1}{5\\}[/tex] y+ 1[tex]\frac{-1}{5}[/tex]

Step-by-step explanation:

y=5x+1

Step 1: Flip the equation.

5x + 1

Step 2: Add -1 to both sides.

5x + 1 + −1 = y+ −1

Step 3:

Divide both sides by 5.

[tex]\frac{5x}{5\\}[/tex]= [tex]\frac{y-1}{5}[/tex]

porfis ayúdenme es para hoy ​

Answers

Answers:

1. V=triangle area × length

V=1/2×8×12×20

V=960in³

2. triangle area × length

Area of the triangle=1/2×4×11

A=22ft²

V=22×6

V=132ft³

3. b, volume always have cubic power (³)

4. d, same reason of question 3

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