1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Slav-nsk [51]
2 years ago
6

Negative 5 1 half plus 7 3 over 4

Mathematics
1 answer:
erastovalidia [21]2 years ago
8 0

Answer:

2 \dfrac{1}{4}

Step-by-step explanation:

-5 \dfrac{1}{2} + 7 \dfrac{3}{4} =

= -5 \dfrac{2}{4} + 7 \dfrac{3}{4}

= 7 \dfrac{3}{4} - 5 \dfrac{2}{4}

= 2 \dfrac{1}{4}

You might be interested in
HELP ME Write and solve a proportion to find y.
Phoenix [80]

Given:

A figure of dilation and the center of dilation is O.

To find:

The value of y.

Solution:

The distance between center and vertex of image (d') is proportional to the distance between center and the corresponding vertex of original figure (d).

d'\propto d

d'=kd

\dfrac{d'}{d}=k

Where, k is the scale factor or constant of proportionality.

So, the scale factor for the given dilation is

k=\dfrac{OB'}{OB}

k=\dfrac{36}{16}

k=\dfrac{9}{4}

We know that,

k=\dfrac{\text{Side length of image}}{\text{Corresponding side length of original figure}}

\dfrac{9}{4}=\dfrac{A'C'}{AC}

\dfrac{9}{4}=\dfrac{27}{y}

9\times y=27\times 4

Divide both sides by 9.

y=\dfrac{27\times 4}{9}

y=3\times 4

y=12

Therefore, the value of y is 12.

6 0
3 years ago
You can buy 15 stickers for $10 how much would 12 stickers cost
Readme [11.4K]

Answer:

8 dollars

Step-by-step explanation:

We can write a ratio to solve

15 stickers            12 stickers

------------------ = ----------------------

10 dollars           x dollars

Using cross products

15 *x = 12 * 10

15x = 120

Divide each side by 15

15x/15 = 120/15

x =8

8 dollars

4 0
2 years ago
Read 2 more answers
Maria can clean the entire house in two hours. Her sister, Sasha, can clean the house in three hours. How long would it take for
lisabon 2012 [21]
Maria do 1/2 work in 1 hour
Sasha do 1/3 work in 1 hour

Thus,
1/2+1/3=5/6 work in 1 hour
5/6 work in = 1 hour
1 work in =6/5=1.2 hours =72 minutes
3 0
3 years ago
Las llantas de un automóvil pequeño tiene una medida de 14 pulgadas de diámetro.Realiza la gráfica de una de las llantas colocan
LiRa [457]

Answer:

Invitamos cordial a revisar la imagen adjunta abajo para mayor detalle sobre la gráfica de las llantas.

La forma general de la circunferencia de la llanta está representada por x^{2}+y^{2}-49 = 0.

Step-by-step explanation:

A continuación, anexamos una representación de las llantas del automóvil como una circunferencia centrada en el origen y con un diámetro de 14 pulgadas, es decir, un radio de 7 pulgadas.

La ecuación estándar de la circunferencia centrada en un punto dado y con un radio determinado está definida por:

(x-h)^{2}+(y-k)^{2} =r^{2} (1)

Donde:

h, k - Coordenadas del centro de la circunferencia, medidas en pulgadas.

r - Radio de la circunferencia, medido en pulgadas.

Si conocemos que h = 0\,in, k = 0\,in y r = 7\,in, entonces la ecuación estándar que representa a la circunferencia de la llanta es:

x^{2}+y^{2} = 49

Ahora, la ecuación general de la circunferencia centrada en el origen satisface la siguiente expresión:

A\cdot x^{2}+A\cdot y^{2}+B = 0 (2)

Donde A, B son los coeficientes de forma de la circunferencia.

Entonces, la forma general de la circunferencia de la llanta está representada por la siguiente expresión:

x^{2}+y^{2}-49 = 0

6 0
2 years ago
4(x+1) = 3(x+1) What’s x = ?
Elis [28]

Answer:

x = -1

I hope this helps!

4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE ANSWER QUICKLY!!!
    12·1 answer
  • Solve and graph the inequality:-12>-k-(3k+4)
    15·1 answer
  • What is the solution of the system of equations? y=-4x+10 y=-2x-6
    14·1 answer
  • What is the length of PR?
    8·2 answers
  • Find the value of 2x -1 when x+6=-2
    5·2 answers
  • The equation for a projectile's height versus time is h(t)=-16t^2+Vt+h. A tennis ball machine serves a ball vertically into the
    7·1 answer
  • X + 2y + 4z = -8<br> 5.2 + y + 32 = 10<br> 2x + y +z = 6<br> Wha
    7·1 answer
  • The test score for a class are shown. What is the average test score? 79,80,92,92,81,100,88,98,71,100,91,90
    12·1 answer
  • Match the expression is equivalent to 5(2x+3) when using the distributive property?
    11·1 answer
  • What's 3.2rounded to the nearest tenth
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!