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White raven [17]
3 years ago
7

If a = 4 and b = 7, what is the value of the following expression? 20 ÷ a + 7 • b A. 28 B. 84 C. 54 D. 33

Mathematics
2 answers:
expeople1 [14]3 years ago
8 0

Answer:

54

Step-by-step explanation:

20 ÷ a + 7 • b

Let a = 4 and b = 7

20 ÷ 4 + 7 • 7

Multiply and divide first

5 + 49

Then add

54

ladessa [460]3 years ago
4 0

Answer:

54

Step-by-step explanation:

a=4    b=7

20/4=5

7✖️7=49

5+49=54

Hope this helps you!

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kupik [55]

Answer:

A) (-2,0) and (6,0)

B) (0,-12)

C) (2,-16)

Step-by-step explanation:

In the graph you see below, you can tell that the two x intercepts are at (-2,0) and (6,0), while the y intercept is at (0,-12). You can also see that the vertex is at (2,-16). Hope this helps!

6 0
3 years ago
Kate has some dimes and quarters. if she has 1919 coins worth a total of $2.95, how many of each type of coin does she have?
Natalija [7]
She has 12 dimes and 7 quarters
6 0
3 years ago
How do you work out (7x+3)(7x-3)
spin [16.1K]

We can solve this using the FOIL method.

= (7x + 3)(7x - 3)

= (7x * 7x) + (7x * -3) + (3 * 7x) + (3 * -3)

= 49x - 21x + 21x - 9

= 49x - 9

Hope This Helped! Good Luck!

7 0
3 years ago
Me pueden ayudar con está pregunta
lisov135 [29]

<span>Cada goma de borrar es $ 5. Primero restar el precio de las revistas ($ 5) del dinero que gastó. Ella ahora tiene $ 20. Luego divida eso entre cuantos borradores compró (4). 20 dividido por 4 es 5. Cada borrador fue de $ 5. ¡Espero que la traducción tenga sentido !!</span>
8 0
3 years ago
Can y’all help me on question 7 please?
Verizon [17]
It would be a I’m pretty sure
4 0
2 years ago
Read 2 more answers
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