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damaskus [11]
3 years ago
9

I need help. Attached are pictures of the questions. Very lost. Answers ASAP please.

Mathematics
1 answer:
Ainat [17]3 years ago
7 0
Answer: One possible equation is: y = -0.86x + 67.3, that would make the temperature in Panama City 59.9 degrees.

To find a line of best fit, you can select 2 points. Then, find the equation between them.

I choose the points (48.1, 26) and (28.4, 43). The slope between them is -0.86 and the y-intercept would be 67.3. Put those two parts together and you have the equation.

You can also use an online calculator to find the best possible line.
You might be interested in
A poster is to have a total area of 125 cm2. There is a margin round the edges of 6 cm at the top and 4 cm at the sides and bott
jeka57 [31]

Answer:

The correct answer is 15 cm.

Step-by-step explanation:

Let the width of the required poster be a cm.

We need to have a 6 cm margin at the top and a 4 cm margin at the bottom. Thus total margin combining top and bottom is 10 cm.

Similarly total margin combining both the sides is (4+4=) 8 cm.

So the required printing area of the poster is given by {( a-10 ) × ( a - 8) } cm^{2}

This area is equal to 125 cm^{2} as per as the given problem.

∴ (a - 10) × (a - 8) = 125

⇒ a^{2} - 18 a +80 -125 =0

⇒ a^{2} - 18 a -45 = 0

⇒ (a-15) (a-3) = 0

By law of trichotomy the possible values of a are 15 and 3.

But a=3 is absurd as a > 4.

Thus the required answer is 15 cm.

7 0
3 years ago
Read 2 more answers
1. what is the exact demical value of 225/16?<br> 2. what is the exact decimal value of 77/12?
SOVA2 [1]

Answer:

14.0625 = \frac{225}{16}

6.41666666666... = \frac{77}{12}

Hope that this helps!

7 0
3 years ago
Camilo practica tiro al blanco. En cada disparo acertado puede obtener 5, 8, o 10 puntos. En su última práctica, su puntuación t
Radda [10]

Answer:

20 disparos

Step-by-step explanation:

Primera etapa es de determinar cuantos tiros de Camilo acertaron al blanco.

Sabemos que en su última práctica, obtuvo 99 puntos con una mezcla de 5, 8 y 10 puntos.  Eso puedo se exprimir así:

5x + 8y + 10x = 99

Sabemos también que el obtuvo tantos tiros de 8 puntos que de 10 puntos, entonces

y = z

Podemos mezclar las 2 ecuaciones y substituir y por z:

5x + 8y + 10y = 99

5x +18y = 99

Una ecuación, dos variables... no es fácil... pero son números pequeños y se puede intentar soluciones.  Entonces, cuantas veces podemos multiplicar 5 y 18 para obtener 99?

El más simple es de hacer la tabla de multiplicación de 18 y ver cual número nos deja con un multiple de 5.

18 x 1 = 18 (99 - 18 = 81, no un multiple e 5)

18 x 2 = 36 (99 - 36 = 63, no un multiple de 5)

18 x 3 = 54 (99 - 54 = 45, SI, un multiple de 5)

18 x 4 = 72 (99 - 72 = 27, no un multiple de 5)

18 x 5 = 90 (99 - 90 = 9, no un multiple de 5)

Entonces, sabemos que y = 3 y z = 3

5x + 18 (3) = 99

5x + 54 = 99

5x = 45

x = 9

El tiró 9 veces por 5 puntos, 3 veces por 8 puntos y 3 veces pour 10 puntos.

En total tiró 15 veces.

Si acertó 75% (3/4) de las veces, cuantos tiros total?

\frac{15}{3/4} = \frac{15 * 4}{3} = 20

Camilo tiró 20 veces en total.

8 0
4 years ago
What is 3 1/8 in simplest form?
Deffense [45]
3 1/8 = 25/8

25 and 8 have no common factors, so 25/8 is in simplest form.
6 0
3 years ago
PLEASE HELP will mark brainly ;)
Aleks04 [339]

Answer:

Both of the top numbers are 1/2 of the bottom number. To check, multiply the top and bottom numbers of 2/4 by 2 and you will get 4/8. (Hopes this helps, have a nice day.)

5 0
3 years ago
Read 2 more answers
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