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DiKsa [7]
3 years ago
9

17 Q Graph the inequality in a coordinate plane -y < 3× - 5

Mathematics
1 answer:
ryzh [129]3 years ago
6 0
Notice that -y\ \textless \ 3x-5 is the same as y\ \textgreater \ 5-3x. Using a graphing utility we can graph the inqueality as shown in the picture.

We can conclude that the first graph in your picture is the graph of the inequality -y\ \textless \ 3x-5.

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Given that Ray B A bisects ∠DBC, which statement must be true? m∠ABD = m∠ABC AB ≅ BC B is the midpoint of DC. m∠DBC = 90°
nadya68 [22]

Answer:

A.m\angle ABD=m\angle ABC

Step-by-step explanation:

We are given that a  ray BA bisects angle DBC.

We have to find true statement .

Angle bisector property:When a ray bisect any angle then the angles  made by bisection of angle are equal.

When ray BA bisects angle DBC

Then, m\angle ABD=m\angle ABC

By angle bisector property.

Therefore, option A is true.

Answer:A.m\angle ABD=m\angle ABC

4 0
3 years ago
Read 2 more answers
Una piscina rectangular de 15 m de largo por 9m de ancho está rodeada por un camino de cemento de ancho uniforme. ¿Si el área de
malfutka [58]

Answer:

El ancho del camino es 1.5 m.

Step-by-step explanation:

Una piscina rectangular posee 15 m de largo por 9 m de ancho.

El área de un rectángulo es igual a la base por la altura. Es decir, lado mayor por lado menor. Entonces el área de la piscina es 15 m* 9 m= 135 m²

La piscina está rodeada por un camino de cemento de ancho uniforme, al cual se denomina x y estará en unidades de metros (m). Entonces el largo de la piscina sumado al ancho a ambos lados de la piscina será 15 m + 2*x, mientras que el ancho de la piscina sumado al largo a ambos lados de la piscina es 9 m + 2*x. Entonces este área se puede expresar como

(15 m+2*x)*(9 m+ 2*x)

Entonces al área de la piscina sumado al camino se le resta el área de la piscina y da como resultado el área del camino, cuyo valor es 81 m²:

El área total - área de la piscina =  área del camino

(15 m +2*x)*(9 m+ 2*x) - 135 m²= 81 m²

Resolviendo:

15*9 m²+15*2*x + 9*2*x + 2*x*2*x - 135 m²= 81 m²

135 m² + 30*x + 18*x + 4*x² - 135 m²= 81 m²

48*x + 4*x² = 81 m²

48*x + 4*x² - 81 m²= 0

Siendo una ecuación cuadrática donde a= 4, b= 48 y c= -81, entonces:

\frac{-48+-\sqrt{48^{2}-4*4*(-81) } }{2*4}

Resolviendo:

\frac{-48+\sqrt{48^{2}-4*4*(-81) } }{2*4}= 1.5

\frac{-48-\sqrt{48^{2}-4*4*(-81) } }{2*4}= -13.5

Como las distancias solo pueden ser positivas, entonces <u><em>el ancho del camino es 1.5 m.</em></u>

En la imagen adjunta se puede observar un gráfico de la piscina más el camino

5 0
3 years ago
The sum of 4 consecutive even integers is 20. what are the integers?
vladimir2022 [97]
Let first even integer = 2x
2x + 2x+2 + 2x+4 + 2x+6 = 2O
8x + I2 = 2O
8x = 8
x = I

Therefore integers are; 2, 4, 6, 8
8 0
3 years ago
Daniel and Sydney are getting high-speed Internet access at the same time. Daniel's provider charges $60 for installation and $4
Misha Larkins [42]

Answer:

5 months

Step-by-step explanation:

Daniel's provider charges $60 for installation and $45.95 per month. Sydney's provider has free installation and charges $57.95 per month

Let x = number of months

Daniel = 60 + 45.95x

Sydney = 0 + 57.95x

Equate both equations

60 + 45.95x = 0 + 57.95x

Collect like terms

60 - 0 =57.95x - 45.95x

60 = 12x

Divide both sides by 12

x = 60 / 12

= 5

x = 5 months

Daniel and Sydney would have paid the same amount for high-speed Internet service after 5 months

6 0
4 years ago
Mrs. Hall’s family loves spinach. On Monday, they bought 4 and 1/6 pounds. On Tuesday, they bought 6 and 1/8 pounds. On Wednesda
krek1111 [17]
The answer is 22 and 7/24
Explanation:
4+6+12= 22, and 1/6+1/8=4/24+3/24=7/24
22+7/24=22 7/24
7 0
3 years ago
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