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Semmy [17]
3 years ago
5

Solving systems of equations using substitution -4x-y=16 Y=-8

Mathematics
1 answer:
Goshia [24]3 years ago
7 0

ᑕᒪIᑕK Oᑎ ᑭIᑕ ᖴOᖇ ᑭᖇOOᖴ

᙭= -2

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Helena needs 3.5 cups of flour per loaf of bread and 2.5 cups of flour per batch of muffins. She also needs 0.75 cup of sugar pe
vesna_86 [32]
Let
 x = loaves of bread
 y = batches of muffins
 You must make a system of two equations with two unknowns that describe the problem
 3.5x + 2.5y = 17 --- (1)
 0.75x + 0.75y = 4.5 --- (2)
 Resolving we have
 x = 6-y (from (2))
 replacing in (1)
 3.5 (6-y) + 2.5y = 17
 21 - 3.5y + 2.5y = 17
 y = 21-17 = 4
 Then substituting in (2)
 x = 6-y = 6-4 = 2
 Answer
 Helena could bake:
 2 loaves of bread
 4 batches of muffins
8 0
3 years ago
Translate the inequality and solve. Negative three times a number is less than six.
mart [117]

Answer:

x>-2

Step-by-step explanation:

The translated inequality to be solved is -3x<6

You divide -3 by both sides which switches the sign because it is negative, there fore the answer is x>-2.

4 0
3 years ago
Read 2 more answers
The diameter of a circle is 17 cm. Find the circumference to the nearest tenth.
Gnoma [55]

Answer: C≈53.41cm

If rounded the answer is C=50.00

HOPE THIS HELPS

6 0
3 years ago
Factor completely.
Serga [27]
Factor the polynomial:

4u² – 20u + 25

Rewrite – 20u as – 10u – 10u, and then factor it by grouping:

= 4u² – 10u – 10u + 25

= 2u * (2u – 5) – 5 * (2u – 5)

= (2u – 5) * (2u – 5)

= (2u – 5)² <––– this is the answer.

I hope this helps. =)
5 0
3 years ago
How do you write the difference of a number and eight, divided by ten
ch4aika [34]

Answer:

(x-8)/10

Step-by-step explanation:

-------

7 0
3 years ago
Read 2 more answers
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